Did someone call a plumber?note
Wow, I never knew sewer tunnels were so wide and spacious. Watanabe:
But what's strange is how nice it smells down here.
For starters, a "sewer" can refer to one of two things. First is a storm drain
, a system for carrying rainwater and snowmelt off the streets and into a nearby body of water. Second is a sanitary sewer
, where the pipes from homes and buildings empty their wastewater, leading to sewage treatment facilities. There are
places where the two overlap, but when this article refers to sewers, it is most likely referring to the latter.
In real life, most modern sanitary sewers consist of pipes too small for an adult to enter. They typically range from a few inches in width coming from individual properties, to about 2-3 feet wide in the street. Even these largest ones can at best only be crawled through, and then only if they are currently empty.
Older sewer systems may consist of underground canals with narrow walkways on the side. These canal systems are the basis of this trope, but very few creatures, humans especially, would actually be able to survive in sewers for any extended length of time. It's pitch black
(sewer workers bring their own lighting), chilly even in the summer (50-60 degrees year-round), and there's little oxygen and a plethora of noxious gases from sewage, making the air highly unsuitable for breathing without specialized equipment.
Sewers featured in video games and any other form of fiction, however, are usually absurdly spacious underground rivers with ample room to move, enabling characters to avoid stepping into the actual sewage (often a good thing, since in many games, contact with sewer water is inherently harmful
). These underground passages have more in common with the catacombs of Paris than any actual sewer system. The dim lighting, labyrinthine passages, and resident rats
provide the perfectly suitable setting for heroes to chase criminals and/or monsters through. Occasionally, the place is so big people elect it as their home. It's not unusual to find whole shanty towns built in ludicrously large sewer or ex-sewer canals, coming close to transforming into an Underground City
. And somehow there's always adequate lighting, warmth, and breathable air. Presumably, there's no bodily waste down there because Nobody Poops
Such sewers also tend to be connected to a multitude of locations throughout the city, accessed through manholes with easily removable lids (in real life, manhole covers are heavy and lack obvious handles to prevent this exact thing), granting access directly into otherwise secure buildings: a perfect way for suspicious types to travel without detection, noxious fumes notwithstanding.
In fantasy or historical fiction, this trope becomes anachronistic. While the Romans
did have a sophisticated sewage system for the city of Rome and other major cities across the Empire note
, the system was too technologically complex for either contemporary civilizations or successor civilizations to replicate. From the Fall of Rome until the Industrial Revolution, the preferred method of waste removal was pouring it into ditches in the street where the rain would wash it away (sooner or later). However, this could be justified by fantasy societies (such as dwarves
) that are more industrialized than their medieval human counterparts.
This trope may coincide with the much narrower Sinister Subway
, and both are generally connected to the all-encompassing Dungeon Town
. For an alternate route, see the Air-Vent Passageway
. These are all standard issue for The Alcatraz
. And don't forget the Abandoned Maintenance Tunnels.
This trope is occasionally justified
in fantasy games by making the sewer system a series of sunken streets.
Real life spacious sewers do exist. See IAMA Drainer
. In practice, the "underground tunnel network where homeless people and thieves live
" of urban lore does exist in a few industrialized cities. They are usually a system of technical tunnels built to accommodate water from various sources, electrical cables, storage spaces for the underground rail systems, and so on. The reason for its spacious construction being the fact it has to allow maintenance workers and sometimes their vehicles
to run inside.
Compare Unnecessarily Large Interior
and Underground City
open/close all folders
Anime & Manga
- Digimon Adventure managed to fit this trope. Despite, you know, a lack of any reason for sewers to exist in the digital world. But then, that's the digital world for you. Considering that the digital world includes such gems of architecture as an upside-down, physics-defying pyramid, an improbably large sewer is the least of their engineering problems.
- The sewers of Mid-Childa in Magical Girl Lyrical Nanoha were large enough for the Forwards to have an all-out battle against a swarm of Mecha-Mooks, a summoner, and her allies.
- One episode of Excel Saga had everybody traveling in a large sewer underneath F City, all the while being stalked by Puchuus. Which is based on a chapter in the original manga, minus the Puchuus. It makes sense that the sewers would be large, since they have to accommodate ACROSS's headquarters.
- Heat Guy J featured an underground sewer city that leached off of the technologically advanced city above. It was freer, pleasant and considerably more crowded than other examples listed in this trope. (Which is strange, as one would think illness and death would be rampant in a crowded, airless city situated next to a river of raw sewage.)
- In Bleach, the only reason Ichigo survived so long was because he was able to move around in Seireitei's ungodly huge sewer system. Although they were also supply routes, which makes a bit more sense. The non-Shinigami members of Soul Society do not need to eat. Which, while not quite at Nobody Poops level, it's more like 5% percent poops. (If even that - everything in Soul Society is just spirit energy, so it's uncertain whether eating results in any waste products.)
- Episode 31 of Sailor Moon has a chase lead into one of these. At least the smell gets remarked upon. While a cat did it get stuck in there, it was really big, due to being a crystal carrier. Once Luna has pushed the large cat into the pipe, Zoicite has no problems following them, which is lampshaded in Sailor Moon Abridged:
Zoicite: I defy physics!
- Used plausibly in Berserk, as they're under a rather large castle/fortified town in around the time large sewer tunnels would have been built. Also avoids the "hero doesn't actually have to walk in the sewage" thing, because it's weird to imagine someone fighting for their lives while caked with poop from the knees down. Realistic, though.
- The sewer system under Mahora in Mahou Sensei Negima! is huge. Huge enough for people to have battles against groups of Mechamooks and Spider Tanks. There's even a massive, cavernous room there that contained an invading army of those plus a few Humongous Mecha.
- Ashford Academy's water distribution tunnels in Code Geass are ridiculously huge, considering it only services the school.
- Behemoth, a massive team in Air Gear, has its HQ in a massive sewer that can hold more than 1000 riders and a massive construction excavator. Possibly justified in that it was a sort of sewage plant, not just a sewer, and it was renovated.
- In Fullmetal Alchemist, Ran Fan escapes through the sewers of Central after she and Ling fight Wrath. Scar is also shown traversing sewers on multiple occasion. However, this may be justified as the city, including sewer networks, has been created entirely under the rule of Father, and the sewers connect to his underground base.
- The sewer network under the imperial capital in Pumpkin Scissors is big enough that it contains as many people as the city above. Also, you can drive and drift in it.
- Spice and Wolf features a sewer system big enough to fit a massive wolf in, with enough room left over for said wolf to fight a group of soldiers. This is somewhat justified as they were originally built the the church to use as escape routes.
- The episode "Leading A Stray!" (The Stray Hoeruko!)". Ash and friends travel through a sewer large enough for a Wailmer to swim in.
- In Episode 29 "Sparks Fly for Magnimite!" Team Rocket's first plan apparently requires Jessie and James to swim though the sewers of Gringy City, however the plan is quickly cut short when Grimers and a Muk clog the city intake of seawater, therefore cutting off the city's power, which cuts off both of their air supply.
- The firing range that the main characters of Noir use for target practice is a bulls-eye chalked onto the wall of a sewer tunnel. Given that nobody in the series mentions that they smell funny, they must have found a highly effective brand of soap.
- In one episode of Kimba the White Lion, Kimba accidentally gets himself lost in the sewer system in Paris and then has to fight an elderly leopard that has been thought as a monster living in the sewers.
- In Wolf's Rain Kiba and Hige spend an ENTIRE night sleeping in one in Episode 3 and neither of them ends up falling sick or anything like that. Later in the same episode the two of them along with Toboe trudge through the sewers with no problem at all with Hige complaining he "doesn't like smelly places" at the most.
- AKIRA: In Neo-Tokyo's sewers are spacious enough to patrol them with flying craft.
- In Magic: The Gathering, the sewers of the city-world of Ravnica are so spacious that they count as cities unto themselves; justified in that they are old cities that have been built over. They're mostly used by the Golgari elves and humans to dispose of waste and grow produce for the surface-dwellers, and by Dimir and Rakdos criminals as safe havens, though they also have their fair job of wandering monsters. The place is even referred to as The Undercity.
- In the later expansion Shards of Alara, the plane of Esper has a sewer system known as the Tidehollow, where the plane's more unsavory elements salvage Etherium scrap. Predictably, most of the shard's black mana comes from this region.
- As mentioned above, the New York (and London, and Chicago) sewers are home to the Morlocks in X-Men.
- The original Morlock Tunnels in New York were not sewers or storm drains at all, but a long-abandoned Army construction project originally intended to serve as a mass fallout shelter and then abandoned partway through construction due to cancellation of funding.
- Played straight in the X-Men Legends RPG, in which the Morlock Tunnels are a sewer system, though it seems to be a storm sewer rather than a sanitary sewer.
- There's also a subfaction of Morlocks who tunnel through the earth nomadically, presenting the flipside to the drain dwellers' coin.
- Ultimate Marvel's Morlocks have intentionally expanded their tunnels into an Elaborate Underground Base, complete with hydroponic gardens powered by a mutant's electrical abilities.
- During a period in Superman comics when Applied Phlebotinum had reinvented Metropolis as a 64th century ultra-city, the sewers were a vast network of extremely clean looking waterways, patrolled by genetically engineered creatures who consumed the city's waste and tasted like chicken. Also, a homeless guy who'd found a rubber dinghy and an outboard motor on a pole and reinvented himself as the mythic archetype of the Ferryman. Regular old Metropolis has the Underworld, home to ... humanoid-but-not-human creatures, and a few humans who can't find anyplace better to live. The Underworld is mostly either natural caverns or excavated by the Underworlders themselves, but it does connect with Metropolis' underground public works (subways, technical tunnels, storm drains, etc.).
- In the Batman comics, Gotham City has a spacious and labyrinthine sewer system that often serves as a base of operation to villains such as Killer Croc and the Rat-Catcher.
- Also, in The Long Halloween, Solomon Grundy and Two-Face. Its sequel Dark Victory has Two-Face, Joker, Scarecrow, Mr. Freeze, Poison Ivy...yeah, the sewers are large enough to be a small town.
- This is sometimes blamed on a lack of proper planning permission system.
- Said sewers are also connected to the Batcave (and one issue of Batman/Superman shows that this entrance is guarded by Alfred with a shotgun, leaving Superman to remark "You didn't have a spare Mr. Freeze gun you could've loaned him?"). Those sewer accesses are ALWAYS big enough to accommodate the Batmobile, Batsub and the Batboat moving at outright irresponsible speeds.
- In fact in Dark Victory, Two-Face and his gang actually stumble into the Batcave by accident, after fleeing through the sewers from their compromised base.
- In the "What If?" type story, The Punisher Kills the Marvel Universe, the Punisher's first victims are Spider-Man and Venom, who are fighting in a sewer. Spider-Man is actually able to jump around (meaning he flies over Venom's head by a good five feet) in the sewer. Yet the reason Punisher picks them off there is because they'd have no room to manouver..
- In issue #23 of the original Wolverine ongoing series, Wolverine has trapped General Coy and Prince Baran in the Madripoor sewers. There is apparently enough room for all three to run around without crouching or bumping into things, and Wolverine is able to leap at his two enemies to scare them into running.
- Every single incarnation of the Teenage Mutant Ninja Turtles, where they have 2-5 bedrooms, a living room, kitchen, a training area, AND a garage for the Turtle Van (let's not think about the blimp for now...). It's unclear if Splinter's meditation room and Don's workshop are part of their bedrooms or separate, but the latter's easy to picture considering how huge their underground palace already is. Although the sewers in almost every section of the TMNT franchise resemble the real-life New York storm drain system more than any sewer, and it wouldn't be the first time people have gotten the two terms confused. Some incarnations (like movies past the first) place the Turtles' palace in an abandoned subway station, with the Van being stored in nearby abandoned warehouses. However, those locations are always connected to the sewer system, and said sewers are inevitably big enough for the Turtles (especially Michelangelo) to be able to skate and do half-pipes in the sewer pipes.
- In the Hellboy spin-off Lobster Johnson: The Iron Prometheus, the Lobster is able to travel by boat through the New York sewer system. And it's mentioned that there is a subterranean cannibal tribe, though not a bad as the ones under London and Paris.
- The Eel would make his lair in one of these (seriously, the ceiling has got to be like fifteen feet high) in early Marvel Comics, laying low after his defeat by the Human Torch in his first appearance.
- Nodwick once found enough of space in one to hang a lampshade:
Yeagar: The sewer system is big enough for you guys to crawl through it?
Artax: Crawl through? are you kidding? The sewer caverns are huge! You'd almost think the town had been trying to cause the bar's foundation to cave in and wash everything out to sea.
Barman: Gee, with my upstanding clientele? Go figure.
- The sewers of Sin City are apparently pretty large. Marv is able to swim through them via the harbor and make it to another part of town in The Long Goodbye. Dwight, meanwhile, takes on an IRA mercenary in the sewers in The Big Fat Kill.
- In The Beano the Ratz appear to live in a sewer large enough for a number of things and the sewer enables them to easily get into the houses of humans. However the sewers have never been shown to be large enough to fit humans down them.
- Kraken was a comic serialized in the 1980's Spanish magazine Metropol, and set in the fictional city of the same name. The Metropol Sewer Police had patrol boats to move around, and the sewers themselves were connected to a whole not-quite-abandoned subterranean city, complete with disused factories and all (a reference to the classic Fritz Lang film) Among the inhabitants of this massive underworld were homeless vagabonds, criminal gangs, long-forgotten veterans of an old civil war and the eponymous Kraken itself, an amorphous, all-devouring tentacled behemoth that kept getting bigger and occupying larger portions of the system in spite of all the efforts to contain it.
- Diabolik often travels inside Clerville's positively cavernous sewers... That are connected to an extensive net of underground tunnels, inhabited by hundreds of dispossessed and homeless people. Upon learning of the latter and of how huge it is, Diabolik admitted he didn't know it was so extensive.
- Mortadelo y Filemón: Many times, a mission will require that Mortadelo and Filemón go down to the sewers, which are big enough to fit Mortadelo quite well (Word of God is that Mortadelo is 1'80 metres tall).
- In Mass Foundations, the trio of protagonists sneak into the abandoned mining facility to capture Shepard’s body through the wastewater pipe. Downplayed, as mining always produces large quantities of wastewater and the pipes of the size shown (they’re implied to be just large enough to move through) are quite likely to be used. Because the facility processes eezo, the water is radioactive as well; they could only get through because of The Courier's Rad-X.
- Warriors of the World: Soldiers of Fortune has the Glast Heim Culverts, wide enough to take eight people walking abreast and then some.
Films — Animation
Films — Live-Action
- The Lone Wolf gamebook series contains a few Absurdly Spacious Sewers, most notably the Baga-darooz in Barrakeesh, capital of Vassagonia. This sewer is vast enough to house giant lizards and other nasty monsters, and criminals can be condemned to be locked within. Unlike some other fantasy examples, however, it is described as extremely filthy, smelly and insalubrious — just getting an open wound in contact with the water can give you a horrible disease. (As in, Race Against the Clock to get the next Plot Coupon before you have to hack off the infected arm and/or die screaming.)
- Pushing Daisies has the most cheerful and attractive looking sewers I've ever seen. At least one character lives in them.
- There are Cybermen lurking in London's sewers in two Doctor Who stories ("The Invasion" and "Attack of the Cybermen").
- Daleks and their pig slaves lurked in Manhattan's sewers in the two-parter "Daleks in Manhattan"/"Evolution of the Daleks".
- New Who also had Cybermen in the "cooling tunnels" beneath Lumic's factory in "Age of Steel", in a Continuity Nod to the previous Cyber-stories.
- "The Talons of Weng-Chiang" has highly-unconvincing giant rats guarding the sewer entrance to the villain's lair.
- The true size of some sewers can be seen in an episode of Dirty Jobs. The sewer the host explored was so small and cramped that nobody could actually stand up straight, and had to spend all of their time inside bent over.
- If you believe Buffy the Vampire Slayer and Angel, sewers in both Sunnydale and Los Angeles are so big that vampires can travel all over the town during the day. In Sunnydale alone there's fourteen million square miles of them, not including a lot of natural cave formations and a gateway to Hell. In "Enemies" it's revealed that the Mayor built Sunnydale "for demons to feed upon", so it makes sense that the sewer system is constructed so as to give easy access to the whole town.
- Lampshaded on Angel in "Fredless" when Fred states: "I could build a condo in these sewers."
- After watching the entirety of Buffy and Angel, one wonders how those two don't constantly get remarks about their iffy sewage smell. Angel in particular practically lives down there.
- One episode of Eureka plays with this, though that wasn't so much a sewer as a sewer and the environmental and recycling center of a town of super geniuses.
- On Reaper, Sam, Ben and Sock once had to search the sewers for an escaped soul made of green nuclear-waste goo. The sewers were fairly dank and smelly, but they were easily big enough for three people to walk through.
- The New Avengers: "Gnaws". (Yes, the title is a pun.)
- In the episode "Skin", Sam and Dean pursue their quarry into a sewer large enough for them to stand upright, occasionally walk abreast, and a spacious lair for the shapeshifter. Large rusty pipes and large amounts of moisture complete the expected look of an ancient underground despite the episode being set in St. Louis, MO.
- Averted in the later episode "No Exit" in which the sewers are extremely small and dark with the Winchesters barely able to make it through
- An episode of Popular Mechanics for Kids is devoted to this, when they go into a sewer to look for a ping-pong ball. Being a show about science and facts, they remark that you always need the proper equipment and that it can be dangerous to go into a sewer. It was actually pretty spacious in there; almost hallway like.
- In Beauty and the Beast, a secret society exists deep underneath New York, in relatively fancy trappings.
- Due South episode "Manhunt"; the Chicago sewers are not only large enough for three grown men and a wolf, they are large enough for three grown men and a wolf to paddle a canoe through.
- Used and averted in The X-Files season 2, episode 2 "The Host." Mulder visits an absurdly spacious sewer in Newark, N.J., and later remarks about its size to a Newark sanitation engineer, who confirms that section as being part of the older system, while the newer parts are not more than 24 inches in diameter.
- Played straight with size, but averted with toxicity in an episode of Casualty. It involves two guys who want to win a bet which involved walking to the pub by using the sewers as a shortcut. The guys have oxygen supply, but then they start to run out... That's when the paramedics are called.
- The G-Cans System (see Real Life) pops up on occasion in Toku programs. A stand-out example is in Kamen Rider Decade, where Decade has a high-speed battle with Kamen Rider TheBee.
- The Legend Of Dick And Dom has a sewer under the Big Bad's castle large enough for the good guys to escape through. They do come out the other side covered in, well, what you would expect. Oddly, this has the opposite of Nobody Poops; there are very few people in the castle, but lots of sewage in the sewer.
- Paranoia once had an section simply named "Sewerworld!" in the Send in the Clones adventure. In the pictures that depicted the Troubleshooters exploring, the tunnels were shown as being quite large, approximately 10 yards wide and 10 feet high.
- Any sewer in Dungeons & Dragons is spacious and comes complete with whole thieves guilds, secret wizard labs, and lots and lots of specially adapted monsters (like the Otyugh and the Cesspit Ooze).
- Module I9 Day of Al' Akbar: The sewer under the city of Khaibar.
- Supplement Adventure Pack I, adventure "The House of Long Knives". The sewers are 20 feet wide and 15 feet high.
- Module A1 Slave Pits of the Undercity. The sewers under the city of Highport are 20 feet wide and 10 feet high.
- Module FR1 Waterdeep and the North. The sewers of Waterdeep can be as large as 20 feet across and high enough for humans to walk through them.
- Module Avengers in Lankhmar. The sewers of the city of Lankhmar are so tall that characters can walk upright in them with plenty of headroom overhead (approximately 8 feet high). They're also about 20 feet wide.
- Dragonlance SAGA System supplement Palanthas. The city of Palanthas has sewer tunnels up to 30 feet high.
- Warhammer is even worse: there are skaven, mutants, and chaos cults. The only solace is that all the shit is on surface. Played straight in the first Gotrek & Felix omnibus, where the eponymous pair become sewerjacks (patrolmen, but for the sewers.) That's right, the sewers are so massive they require law enforcement. It's specifically noted that the sewers under the city of Nuln were made by master Dwarf artisans, and the system includes cathedral ceilings in some of the central tunnels.
- Not surprising since they're based on the ones in Paris, but in 7th Sea, the sewer system in the city of Charouse in Montaigne is quite spacious and filled with surprises, including possibly a Stargate. The Paris underground is complicated by the presence of a network of catacombs under the city.
- In Shadowrun, the sewers under Denver happen to not only be rather spacious, but also open up to a maze of former subway tunnels and other cloaca, sites which attract communities of ghouls, rogue spirits, coyotes, and the occasional aspiring thaumaturgist. This is actually rather common in Sixth World sprawls. Seattle features the Ork Underground, built on the old Seattle Catacombs, the bus tunnels, old basements, and lots and lots of sewer tunnels. Justified in the new Manhattan setting, where the city built right over the remains of an earthquake and just sealed off the old subway system in favor of suspended monorails.
- In SLA Industries, the planet of Mort boasts a generously spacious sewer system, one vast enough to hide hordes of serial killer gangs and other monsters.
- Warhammer 40,000
- The next-to-lowest levels of the Underhive of the Hive Cities resemble this trope. According to Necromunda the very lowest level (AKA "The Sump"), is a literal sea of various human and chemical wastes, patrolled by diamond-eyed spiders the size of battle tanks). Justified since it's stated many times that these mega-cities grow by new generations building on the ruins of the old ones. So those deep levels are actually remains of streets and buildings that have become enclosed on all sides, and therefore seem like tunnel systems.
- The lower decks of starships are about a fifty-fifty mix of Absurdly Spacious Sewer and Eternal Engine.
- Vampire: The Masquerade has sewers spacious enough so clans of vampires can live in them, along with libraries. So not only are they spacious, but dry.
- Given that said vampires have covertly directed human affairs for thousands of years, one might think this trope justified there since one of the vampire clans prefers living in them.
- This did not significantly change in the New World of Darkness; they turn up occasionally in Hunter: The Vigil.
- Chaosium's Thieves World boxed set said that Sanctuary's sewers were large enough for armed troops to pass through them.
- Traveller The New Era supplement Vampire Fleets, adventure "Promise". In the Downbelow beneath Star City the sewer tunnels are up to 4 meters high and wide.
- Marvel Super Heroes Deluxe City Campaign Set Campaign Sourcebook. The sewers of New York are described as being up to 30 feet (10 yards) across.
- In Guys and Dolls, the New York sewers have enough room for a full dance number!
- The sewers in Urinetown are large enough to hold the rebel "base". And one song with a full dance section. As Urinetown is essentially a Troperiffic pastiche of musical theater, this is hardly surprising.
- We never actually see the sewers per se in Les Misérables, as they're in most productions just represented by shafts of light that Valjean walks through, but everything is covered in Literature and Real Life.
- A lot of videogames have this kind of level. For a more comprehensive list, look here.
- Air Force Delta Strike had you flying through Absurdly Spacious Subway tunnels.
- Armored Core is a fairly egregious example: the sewers aren't just human sized, they are in fact mech sized. Combine this with the fact that the mechs in Armored Core are shown to be at least two stories tall, and that these sewers are spacious in relation to the ACs themselves, and these are some very spacious sewers.
- Assassin's Creed: Altair's Chronicles features repeated trips through sewers with moving platforms and water that gushes out of pipes at repeated intervals for no apparent reason.
- In true Batman fashion, Batman: Arkham Asylum reveals a massive complex of catacombs and sewer lines hidden in the deep caves of Arkham Island, one such system housing Killer Croc. Sure explains why Arkham is such a Cardboard Prison.
- Betrayal at Krondor, where the sewers under Krondor were so large that they had 2 whole floors, and several different gangs all living and operating out of them.
- In Beyond Oasis, the sewer-like area underneath the Castle. This is explained as being the storage place for an ancient power, which Silver Armlet sends you down to get.
- Many levels in the SNES and Mega Drive platform game Boogerman: A Pick and Flick Adventure. Or at least the bonus areas, which are accessed by flushing yourself down a toilet.
- The tutorial level of zOMG features this with a lampshade hanging in the in-game manual.
- Chrono Trigger: The Sewer Access in 2300 A.D., which you must fight and navigate through in order to reach Keeper's Dome.
- City of Heroes: Paragon City has a huge sewer system choked with all kinds of villains (mutated cultist gangs, decidedly amoral surgeons and their scientifically animated zombies, just for starters...), and an abandoned network that's home to even more dangerous villains (extradimensional alien invaders, giant mutated monsters). Even generic missions have an instanced sewer map for this trope.
- The Rogue Isles, in City of Villains, have their fair share as well.
- Averted in the Praetorian Underground from the Going Rogue expansion — this insanely spacious tunnel system (complete with faction bases and offering an alternate way of getting from zone to zone fast) is not a sewer, but an abandoned subway network.
- Along with vents and maintenance tunnels, a common way to safelynote get from point A to B in Deus Ex. One sewer junction has a bioweapons laboratory built into it.
- The prequel, Human Revolution, continues this trend, to the point where hobos, street gangs and conspirators, make routine use of the sewers of Detroit and Hengsha.
- Freeware RPG Barkley, Shut Up and Jam: Gaiden has one as the location of a community of furries.
- One of levels in a Flash game, Dangerous Dungeons, is called explicitly "Absurdly Spacious Sewer".
- The very first dungeon in Dark Chronicle is the sewers of the hero's hometown. While it is an easy level to blow through in less than an hour, it's notorious for being THE most frustrating area in the game to play the golfing minigame Spheda, due to the small gutters along the walls that like to trap your "ball".
- Though perhaps cramped by video game standards, Diablo II has several underground areas that are far roomier than might be reasonably expected. Act 2 under the desert town and Act 3 beneath the jungle cities are two prominent sewer examples (justified in both; deserts get huge flash floods at times that can sweep away the sand a town is built on, and rainforest get rain all the time and need the sewers). And although not technically a sewer, the chapel basement of the original Diablo is absurdly larger than the building itself. . . even discounting the encroaching levels of Hell.
- Distorted Travesty dares to place its giant sewer... Inside a train!
- Dishonored has you traversing through a few of these. All of them are incredibly filthy, with rats and corpses littered about, and are big enough to walk and swim through.
- Dwarf Fortress features one under each and every city despite its medieval fantasy setting. However, parts of it are usually completely filled with water and do not have a sidewalk.
- EarthBound and Mother 3. The EarthBound one notably averts the "not walking through sewage thing" (and for some reason, even has little ladders leading into the muck. Eww.)
- The Elder Scrolls series has several Justified examples:
- In The Elder Scrolls III: Morrowind, the sewers of Vivec are quite spacious with walkways on the sides and a deep waterway in the middle. Justified, since Vivec is a City of Canals, the sewers double as flood controls and the extra space is needed.
- In the Tribunal expansion, the sewers are even more spacious. Justified once again, as the sewers are actually part of the original (destroyed) city which the current city was build over.
- Justified in The Elder Scrolls IV: Oblivion. The Imperial City has insanely massive sewers, but it is explained in the in-game literature that the whole infrastructure is an abandoned Ayleid city, so the sewers apparently have just lost their former purpose.
- Justified in Skyrim. The Thieves Guild operate out of a spacious sewer in Riften known as "The Ratways", though parts of it appear to have been originally built as underground warehouses and basements.
- While Eternal Sonata is notable for having a sewer in which there is thriving plant-life.
- The plant life actually made sense in context since the sewers were also absurdly well-lit for no apparent reason.
- Eye of the Beholder takes place, technically, in the sewers of Waterdeep. Though after the first levels, the sewer-ish feel is replaced by dwarven tunnels, drow mazes, thri-kreen hives and an underground palace.
- Final Fantasy VII and Final Fantasy VIII both have sewers that the characters move through and battle within, under Sector 7, Midgar and under Deling City, respectively.
- Final Fantasy XII's Garamsythe Waterway is a labyrinthine series of tunnels that are at least thirty-feet tall and much wider. Some rooms are large enough to fit basketball courts, and these naturally, are the sites of boss battles. This is, however, heavily implied to be an actual waterway, designed for the purpose of bringing water into the desert city of Rabanastre. The actual sewer is not built to the degrees of this trope, but is still extensive enough that the entire population was forced to live there after the city was conquered.
- Sewer areas in Glider PRO are just as tall as other kinds of rooms.
- Subverted in Half-Life 2. Despite taking place Twenty Minutes into the Future, much of the sewer system is horribly cramped and dangerous and extremely difficult to maneuver through.
- Hellgate: London.
- Several games in the Jak and Daxter series, particularly Jak II: Renegade and Jak 3, have levels that use this trope extensively.
- Jet Set Radio Future features a positively palatial sewer system including vertical shafts several stories tall. (The player's choice of Rudie can skate right on up using his/her rocket-propelled inline skates.)
- Knights of the Old Republic has one of these when you're searching for Zaalbar, the resident wookie. It's large enough to hide a Rancor in!
- In Metal Gear Solid 3: Snake Eater, Snake escapes Groznyj Grad the first time, after being captured, by tricking the guard into opening his cell, sneaking to a manhole in the base, and running through a sewer leading to an Inevitable Waterfall where he is confronted by Ocelot and the Ocelot Unit.
- The Last Story has the party exploring several unexpectedly large underground environments, one of which is the sewers under Lazulis Island, which are apparently large enough to shelter the entire population plus leave plenty of dank monster filled corridors for our heroes to explore.
- The Last Remnant has at least one example of this in the Nagapur Aqueducts, it is so spacious that Giants live down there.
- Might and Magic VI has the Free Haven Sewers, VII has the Erathian Sewers. Both need to be explored for plot advancement and/or character promotion.
- The Marketplace in Monsters, Inc.: Scream Team.
- Postal 2 has a hidden one. It leads to a hidden Taliban base containing nukes.
- Shadows of the Empire has a level where you have to infiltrate the Big Bad's palace through the sewers. There are some sections that are easily bigger than a football field.
- Radiata Stories has Jack, the player character, traverse the sewers underneath his guild in a couple of missions. The missions are notoriously disliked due to the sewers also doubling as The Maze. Like Earthbound, the game averts the whole "not actually stepping in sewage" deal, to Jack's horror.
- In Resident Evil 4, Leon falls through a trap door to a massive sewer system beneath Salazar's castle, complete with giant Plaga-cockroaches. Salazar compounds matters by sending his right hand to dispose of the protagonist.
- 'Your right hand comes off?'
- Resident Evil 2 also had some absurdly spacious sewers, with features such as an elevating bridge and offices for sewer workers.
- La Tale is notable for having a sewer that is several stories high. And infested with Goddamned Bats.
- The Legend of Zelda
- The Legend of Zelda: Twilight Princess features one of these twice in the game: the same location appears as the training level for Link's wolf form, as well as later, after the third dungeon. While not a huge area, it's still absurdly spacious, and seems to double as a prison of some kind. It's also worth noting that said area is apparently inside Hyrule Castle, and clearly above ground level.
- In A Link to the Past, Link and Zelda escape from Hyrule Castle trough the sewers.
- The Bottom of the Well in Ocarina of Time also has elements of this, although it's mostly Big Boo's Haunt. Of course, it's stated in game that someone's house used to be where the well is, so that level is presumably his basement. One can't help but wonder what the guy did in his spare time....
- In Lego Batman the Gotham sewers aren't just big enough to walk through; they're so big that you need a flight suit or a high jump just to reach certain parts of it. However, this network is not very well secured. Penguin and Killer Croc use the sewer system to break out Catwoman by coming up through the toilets in the police station. And yes, there are alligators.
- Both Parasite Eve games with New York City sewers and a sewage passageway between the shelter and the motel.
- In Portal, Chell travels through what appears to be an open-topped sewer... barefoot.
- In Mirrors Edge, multiple highrise buildings can be stuffed into the city's storm drains.
- The video game of Robots has a mazelike sewer that is inexplicably set up like a huge pinball machine. You actually have to use a transport pod to traverse this level.
- Romancing SaGa had two: Estamir and Melvir. The sewers of Estamir were catacombs that could connect North and South Estamir; had a graveyard, and a temple dedicated to a Stronger Sibling of the Big Bad. The Sewers of Melvir was a labyrinth that could allow one to enter the palace and had a temple dedicated to the Big Bad himself.
- SaGa 2 has one in Venus' world. With MAGI and perfectly usable items, no less!
- Serious Sam — The First Encounter and Serious Sam 2 have sewer levels. Lampshade Hanging in Serious Sam II when Sam says "I knew it! There ain't no games without sewer levels."
- In Shin Megami Tensei III: Nocturne, the Great Underpass of Ginza.
- In Digital Devil Saga, the Anahata Waterways from the first game. Unlike most examples, this one doesn't need to have any explanation as to why it's so huge since the entire world is a virtual reality.
- In Persona 2: Eternal Punishment, the...uhm, Sewer.
- Sonic Adventure has Casinopolis' sewer, Dilapidated Way, which your ball gets dumped into if you lose a game of pinball. Sonic is the ball. Oddly, it's full of hazardous traps, money, shields and other things. However, it's subverted with Station Square's sewer, which is incredibly small and exists only to get Sonic and Big into the downtown city and Twinkle Park, respectively.
- Sorcerer University of The Spellcasting Series has a large and complex sewer system beneath it, which Ernie must use for rapid and/or secretive transit. The tunnels are large enough for an elephant to walk through without issue. Unlike a lot of video game examples of this trope, though, Ernie doesn't get the luxury of walking on nice clean ledges and pipes. The smell in some areas is said to be more than Ernie can bear, and occasionally, even more than a bear could bear.
- Suikoden II has a traversable sewer area under Two River City, where a recruitable (and less-than-hygienic) character lives.
- In Summoner, the sewers of Lenele are huge. Even great big Golems have plenty of room.
- The Mario series frequently uses this for the famous underground levels. You could argue that the entire Mushroom Kingdom is a giant sewer system from the abundance of green plumbing pipes. In fact, the Ur Example for video games is the original Mario Bros., which is where the Mario Bros. themselves actually made use of their plumbing abilities.
- In Tales of Symphonia, Zelos takes everyone through the Meltokio sewer, which is spacious enough to allow giant rats to roam it freely, and has multiple levels, computers, and trash compactors.
- Team Fortress 2 — Anywhere there are sewers / underwater pipes, they're big enough for even the Heavy Weapons Guy to run and/or swim through without trouble. 2Fort is the most well known example, but other Absurdly Spacious Sewers can be seen in Doublecross, Hydro, Well, and a number of custom maps.
- Toki Tori has Slime Sewers. The levels are covered in bright green waste and crawling with slugs.
- Lots and lots of examples in the Wario Land series. The level Arabian Nights in Wario Land 4 for example has sewers big enough to fly a flying carpet through, and have various secrets hidden near the ceiling and under the water. Crescent Moon Village apparently has two separate sewer systems, both of which are much larger than you'd expect from the design of such a level. The Golden Passage in said game also has some kind of underground canal running all the way from the start of the level to the end, as some kind of place Wario lands in when he misses a jump.
- In World of Warcraft, the city of Dalaran has a sewer area with spacious tunnels and halls that are big enough to contain several buildings and a small lake. There's even an inn down there! Other than said lake there's not much running water, and no waste other that some junk lying around in piles of rubble.
- The Undercity is built out of the sewers and catacombs of the city of Lordaeron.
- Both are justified: Undercity was in the process of being converted into Arthas' new throne when he had to leave and Dalaran's sewers intersected with their prison complex.
- Lost Souls MUD has a couple of these, in the major cities of Losthaven and Liathyr.
- The infamous sewer in Xenogears, where you can lose yourself eternally and forever and be assaulted by a giant mutated skeleton.
- In Banjo-Kazooie, it seems like the entire of Clanker's Cavern is a massive, massive, massive sewer. To put it in perspective, the central room contains the level's eponymous whale-sized robot shark. Clanker's Cavern itself is accessed through one of the many similarly large sewers of Gruntilda's Lair (though they're comparatively small).
- The sewers under St Petersburg in Hitman 2.
- Skies of Arcadia features such a sewer under the capital city of Valua that the protagonists must go through in order to rescue their friends in the middle of a public execution. Partly justified in that it used to be catacombs. However, it's never explained why a city floating above a limitless abyss would need sewers in the first place instead of, you know, piping all their waste straight into said abyss.
- No One Lives Forever not only has this, but it even contains a sign reading "Obligatory FPS Sewer Section".
- As befitting its tabletop source material, the sewers in Vampire: The Masquerade – Bloodlines are very roomy and connect to almost everywhere - luckily for those Nosferatu players who need to move around without being seeing by mortals.
- Ratchet & Clank: Up Your Arsenal has a large sewer on Aquatos big enough for Ratchet, Clank, and Skid to break in, a multi-layered area hiding nintey-nine sewer crystals at twenty thousand bolts apart, and a humorously named weapons dealer of questionable credentials.
- Comix Zone's sewers have enough room for our hero, Sketch Turner, to suspend himself from pipes to avoid low attacks.
- The last section in Police Quest II. Which is sort of odd, considering that the games' main selling point is being so scrupulously realistic. It is semi-justified by being beneath the Expy of New York City, and it is definitely not safe: lethal pockets of methane gas make traversing the sewers hazardous at best.
- The end-game stage in The World Ends with You is a perfect representation of this trope, and Truth in Television: that sewer really does exist in Shibuya.
- In Everquest II the sewers of Qeynos have vaulted ceilings so high and well lit that it practically looks like you're in a cathedral.
- BloodRayne 2 has sewers big enough to do acrobatics in.
- The future city of New Mombasa depicted in Halo ODST doesn't just have your average sewage system. It is also home to an extensive maintenance system that runs ten floors deep, an underground lake, dozens of Bottomless Pits, and a supermarket-sized AI construct.
- Fable III has sewers that are comfy and dry. In fact, they're so clean your dog can sniff out a wedding ring somebody dropped down there!
- inFAMOUS sometimes has your character traveling down huge sewers to learn new powers, and bring electricity back to the city.
- The sewers Drake and Flynn use to enter the museum at the beginning of Uncharted 2.
- In one stage in Nanostray 2 you are flying a spaceship through a sewer system and when you look at the background you can see how ridiculously huge the sewers are.
- Pokemon Ranger: Fall City's sewer system. It's big enough to have a few Pokémon living inside it.
- Castelia City's sewers in Pokémon Black 2 and White 2 are even bigger. People can walk down there comfortably and there are lots of Zubats, Grimer, Muk, and some Unova Pokémon.
- Parts of the Depths in Dark Souls are like this, filled with rats, slime monsters, and Hollows.
- There is one of these in the second Black Mirror game.
- The Trail Of Anguish's sewer is so big you can build and fly a hovercraft through it.
- Left 4 Dead has a pretty big sewer system in the third chapter of "No Mercy", aptly named "The Sewer." It's large enough for hundreds of zombies, a Tank or two, and has the space for a Smoker to easily launch his huge tongue at the survivors from a good distance. There are a few cramped ventilation ducts that you might find a Witch in if you're unlucky, but otherwise the actual sewers are pretty open.
- Yoshis Story features two levels set inside giant sewer pipes. The first level, Jelly Pipe, is loaded up with mysterious gunk that clings to the sides. The second, Torrential Maze, is full of rushing water to sweep you away.
- When the heroes from Shining the Holy Ark get kidnapped they use a secret passage and escape into the sewers. It appear to be one massive space under a vaulted ceiling, with multiple levels, that is actually bigger than the castle above it. Maybe justified as there were more than one secret entrance to the castle and it's implied that soon of the royalty is entombed there...in the sewers.
- Global Agenda gets in on the action with a mission in the subterranean waterways in North Sonara (Recursive Colony Update). It's the sort of spacious that some of the shorter-range turrets can't cover its width.
- Neverwinter Nights: the player visits the sewers of Neverwinter, and, later, the sewers of Luskan; true to form, both of them more closely resemble a spacious network of extremely clean canals. The Neverwinter sewers even have bridges and a guy who lends you a boat.
- Somewhat justified in Dungeons & Dragons Online. Most of the game takes place in city of Stormreach, built on the ruins of what used to be a giants' city. Sewers/storm drains date to the original city; they are spacious enough for humans and would just barely fit a giant.
- A Dance with Rogues, a NWN mod, gives us the Betancuria sewers, which stretch under the entire city of Betancuria and are used as secret passageways by the local Thieves' Guild (even their main hideout is there) and as a Warp Whistle by the player. The sewers are large enough to host a plethora of monsters and a bunch of quests actually requires you to go there (or to be dumped there with no gear or clothes).
- The Witcher has the Vizima sewers, which are large enough to house dozens of undead, a monster boss (which is, in fact, you very first mission mark in chapter two), and a whole bunch of conspiratorial meetings you get to crash in chapter three.
- Yakuza 4's Saejima primarily gets around the city through traversing the sewer tunnels. It's pretty much the only way he can travel for much of the game due to being a wanted man.
- "The Eel Deal", "Sewer or Later" and "Hangin' Out" levels from Crash Bandicoot 2: Cortex Strikes Back.
- In Dragon Age II, Darktown is an under-city that runs beneath Kirkwall, connected by old sewers and former mines, where the beggars and refugees that are too poor for even Lowtown have been forced to dwell.
- The Sewers map in Perfect Dark multiplayer qualifies for this. You briefly have to enter a storm drain in the Chicago level in singleplayer. What little explorable space there is happens to be quite large and open, aside from some small tunnels you have to duck to enter.
- Twoson Sewers in The Halloween Hack. It's covered in hippies and rats. Varik enters this place to head for the monster's location. At one point, the water is replaced with blood, the hippies become zombies, and blobs and roaches join the fray.
- In Kingdom of Loathing, the Hobopolis Clan Dungeon takes place in the sewers beneath Seaside Town.
- The futuristic setting of Messiah has sewers big enough that an entire community of insane cannibals thrives in there.
- In The Matrix: Path of Neo you get to fully explore the Mega-City's sewers and they truly are huge, there's more than enough space for a whole team of SWAT to run around, gaps over ten feet wide that you have to use focus to make the jump without dying and platforms that have Bottomless Pits, or very close to them, under them.
- In what is perhaps the game's (barring the walkers) biggest deviation from realism, this is present in the fourth episode of The Walking Dead's first season.
- In Devil's Dare, one of the four stages is a sewer that is more than large enough to fit the bill.
- In Silence Of The Sleep, a sewer section appears near the end of the game.
- Spoony has expressed a hatred of sewer levels in videogames. He was especially disgusted by the game that's all sewer levels.
- A sanitary sewer like this appears on the island used for version two of Survival of the Fittest, spanning the entire island underground, but from the vague descriptions it's implied that people can only just barely move across the walkways on the sides, and that otherwise it's fairly cramped.
- The sewers of The Town are also infamously large, spacious and full of random monsters including rat shaped robots and Xenomorphs.
- In the story "Boston Brawl" in the Whateley Universe, the Boston sewers are big enough to get lost in. Phase gets stuck in the pitch dark, knee-deep in.. ugh, don't even think about it. Then she gets attacked by hundreds of The Necromancer's zombies. In the pitch dark. Ick.
- In "Merry Meet, Merry Part, and Merry Meet Again", Merry spends a lot of time in the city sewer to try and keep out of sight - and then ends up going deep enough that she finds a man-made cavern with a very powerful computer hidden inside. The reasons for this, and what else is hidden in the cavern may qualify for a partial AI Is A Crap Shoot. Or possibly a subversion thereof, since Palm was deliberately going for humanity-unfriendly AI.
- These have appeared in several Global Guardians stories, but they are always storm drains and flood-control tunnels, old abandoned subway lines, and other tunnels people were meant to access rather than sanitary lines. The most notable case was when Team America discovered the Twelve Tribes living in the catacombs under New York.
- Partially subverted in Catacombs of New York. The sewers there are approximately the size that the real sewers of New York are, until you get to the buried underground Indian settlement.
- In Mother of Learning, many town sewers are made out of sealed-off parts of The Dungeon, an enormous underground maze of tunnels.
- The Scavengers of Next Breed Of Thief have their base in such a sewer system.
- In Curveball, Farraday City's sewers were apparently built specifically for people to travel through — complete with secret rooms for the travelers to hole up in. Later on, we find out that the water that flows through them during a storm forms a magic rune the size of the entire city.
- The Lower Sewers of Overlord Ascendant are spacious and expansive, filled with monsters. Of course, they were made that way deliberately.
- Futurama really played with this one in a few episodes. New New York's sewers are actually the city of New York, and home to a community of mutants, who mention off-hand that they have a sub-sewer system (home to a community of sub-mutants, according to sub-urban legend). It helps that New New York's sewers connect with the subterranean ruins of old New York. Reality intrudes, however, when the Planet Express crew gets lost down there and Fry says that the only way out is through... a tube that's at most only a few inches wide ("Don't worry, it gets wider after about a mile").
- Teenage Mutant Ninja Turtles. In all incarnations, their sewer lair is larger than any house you've been in (possibly) and the tunnels are wide enough to accommodate vehicles like the tank-sized Battle Shell. It is very seldom that the Turtles must come into contact with anything you've flushed. In the 2003 cartoon, their original lair was invaded and they later got another, even more palatial one.
- Kind of justified; Their second lair was actually an ancient, abandoned Elyntian outpost. They later moved out of the sewers and into a pumping station.
- Averted in the 2012 series due to their lair being a subway station as oppose to the sewers.
- Mainframe in ReBoot was shown to have sewers in one episode. Why digital lifeforms require them is a mystery.
- They're for when someone calls flush();
- In Sonic Underground, the only way to get very deep into Dr. Robotnik's empire was in... the sewers.
- Avatar: The Last Airbender: When the gang needs a way to sneak into the newly-occupied Omashu, Aang shows them a secret way through the sewers, which is large enough to hold nearly the entire population of the city. More realistic than most, given it's full of sticky smelly goop that Aang and Katara are able to bend away from them, but that Sokka gets covered in - and gets a little too closely acquainted with some of its denizens as a result.
- Kim Possible has done the sewer gig more than once, even twenty years into a dystopian future. In their defense, they actually had to walk through some of the sewer fluid.
- Freakazoid! used this until it became a running gag, with more than one character complaining about "poo gas".
One character Roddy McStew notes they're called "crud vapors" in his native Scotland.
- Several villains in Batman: The Animated Series based themselves in the sewers, requiring Batman to go there in search of them, like the Sewer King and his legion of children, and Killer Croc. The Penguin also briefly had a hideout in one, likely referencing Batman Returns.
- Likewise, Batman Beyond ventured into a downright cavernous sewer system in at least one episode.
- In The Tick, Sewer Urchin lives in an enormous apartment in The City's sewers, and on some occasions provides the other heroes with goods that are otherwise difficult or impossible to acquire, claiming "You'd be surprised what people throw away, yeah, definitely."
- In The Spectacular Spiderman, Flint Marko and Alex O'Hirn flee the scene of a robbery by busting through the store's basement wall, and escaping into marvellously cavernous sewers, only to be promptly caught by Spider-Man. Later, Spider-Man traps the Rhino in a steam-tunnel created from ruptured sewer pipes. Quarters are tighter, but the hulking Rhino can still maneuver relatively freely. Half the Sinister Six pursue a fleeing Spidey through these sewers as well.
- Justified Trope for Where on Earth Is Carmen Sandiego?, as Carmen Sandiego leaves a clue for Zack and Ivy in the Sewer of Paris.
- In an episode of Hey Arnold!, Arnold drops his grandfather's watch down a hole to the sewer (which somehow didn't break even though it fell for three seconds before hitting the ground: a drop). He descends into the sewer to retrieve it only to find it has been taken by the "Sewer King," a man who lives in the sewer and claims sovereignty over it.
- Stock Animation in Code Lyoko often has the heroes skateboarding through some very spacious sewers. Then again, the series is French...
- Since the water is flowing directly into the river, it is more of a storm drain tunnel than a sewer.
- In Ed, Edd n Eddy, the sewers beneath the cul-de-sac, as seen briefly in "High-Heeled Ed" and more extensively in "Boom Boom Out Goes the Ed", are pretty spacious.
- Family Guy
- The episode "Breaking Out is Hard to Do" ends in a sewer that is wide enough to fit two TIE fighters.
- Notably averted in The Shawshank Redemption parody, where Peter barely squeezes through a half mile of dirty sewage escaping.
- Danny Phantom had one episode where the sewer system was big enough to support one ghost boy, his currently possessed love interest, and thousands and thousands of big ass vines gunning towards him. Has some incredibly clean water, too.
- Anakin and Obi-Wan wade through one of these in Star Wars: Clone Wars as part of a Dungeon Bypass.
- The sewers in the Batman: Gotham Knight are just effin' enormous, one area seems to be several stories tall.
- South Park
- The small town of South Park even has spacious sewers big enough for the boys (and Mr. Garrison) to walk in when searching for Mr. Hankey in "Chef's Chocolate Salty Balls." Obviously, the presence of a magical talking piece of crap means the "no poop" rule is averted.
- Even ignoring Mr. Hankey, the show is one of very few works to acknowledge the disgusting nature of sewers in general. In one gag, Cartman sneezes on Kyle, who complains that sneezing on others is gross and unsanitary. Cartman responds, "oh, sorry, you wouldn't want to get exposed to germs while you're knee-deep in human feces."
- Jimmy Two-Shoes: The sewers of Miseryville are apparently big enough to house a secret lab for the resident Mad Scientist.
- Arlen sewers in King of the Hill episode "Serpunt" is big enough to walk on when Dale and Hank hunt down the escaped snake.
- The Simpsons episode "Two Bad Neighbors" has walkable sewers running perpendicular to the street when Bart and Homer attempt to sneak into Bush's house.
- Total Drama World Tour has one of these in the episode "Broadway Baby". The cast rides speed boats through it.
- This seems to be the deal with the sewers of Mellowbrook on Kick Buttowski as Kick manages to operate them quite well, even with Kendall riding with him on his skateboard. They also appear to host crocodiles or alligators.
- Phineas and Ferb have this when Candace is required to battle a sewer-dwelling aligator/crocodile to get one of her Fire Side badges.
- During the song "Subterranean Crocodile Apprehension Expedition", the usual gang along with Irving and the Fireside Girls, all of them riding a total of 4 jet-skis; try to chase Candace and a crocodile, both in an airboat; doing a race on the sewer rivers that include several tunnels, water curves, crossings and sidewalks wider than a truck. It even has a ladder up to the subway stations and the subway railway itself.
- The sewer in the Talespin episode, "Bringing Down Babyface" is (just barely) big enough for Baloo to fly his plane, the Sea Duck through.
- The sewers of Bayville in X-Men: Evolution are fairly sizable, large enough for characters to more or less walk upright in most places, but in most circumstances the characters have to walk through the dirty water. Still a big enough space for a camp for the Morlocks to live in, though.
- Mr. Bogus:
- The hideout of the weasel mobsters in the first act of the episode "Bogus Private Eye" is a sewer large enough to conceal all of the smuggled goods that they've been stealing from available sources.
- In the first act of another episode, Bogus, Brattus, Ratty, and Mole end up in another sewer, with Ratty and Mole meeting up with a group of biker rats after Ratty accidentally takes out their previous leader, while Bogus and Brattus are rowing down another area of the sewer, before they get eaten by an alligator.
- Detentionaire has a few, under the school, Green Apple Splat factory, and Brandy's condo. Some parts of them are a little more high tech than most sewers, though.
- In "Verb Dog, When Action Calls!" on Martha Speaks, Martha and Dr. R. try to hide in one of these, but it doesn't work for long.
Truth in Television
for almost any city of significant size, although what most people would consider "sewers" are actually storm drains that are for carrying excess rainwater away from the city to prevent the streets from flooding.
- London's sewers are in places as spacious as computer games would suggest, having been built on a massive scale in the 19th century to accommodate future population growth (though the network has grown a hundredfold since then). The Victorian-era section of the London sewer system is huge, with several million tons of brickwork and tunnels up to nine feet in diameter. There are also many kilometers of unused underground tunnels built for other purposes, ranging from railways to military bunkers.
- ... and Moscow sewers
- The sewers of Vienna: Most of the sewer system has sidewalks, there are even big storage rooms down there.
- Parts of Japan have been integrated into the G-Cans project -- a stormwater system so huge it can be favorably compared to the Mines of Moria.
- The Sewers of Paris — famed in song and story — are a major tourist attraction.
- Beneath Saint Paul, Minnesota there is a extensive network of several tunnel systems, including both active and abandoned sewers. These sewers also interconnect with several natural and abandoned man-made caves.
- Some old cities have large underground cisterns, design to collect and hold rainwater, which reach the sizes of some of these fictional sewers. For example, the Basilica Cistern in Istanbul.
- Truth in Television: There are whole communities living underground in New York City and Paris, to name a few, and obviously, there's more than enough elbow room. In Paris, there are even illegal theaters and passageways to the catacombs via sewers.
- Many of the much older major cities, especially the ones in Europe, have vast underground networks of tunnels and rooms that are leftovers from the city's previous development age. For example, Rome is built over many ancient buildings, Berlin has numerous World War II era bunkers, and Chicago has a labyrinth of secret rooms and passages built during Prohibition.
- The parking lot in front of Baltimore's City Hall has the old Jones' Falls River Bridge buried under it. When the river was moved to build Downtown, whoever was in-charge decided to bury the bridge instead of tear it down. This has the unfortunate side effect that as much as the city would like to sell the land for another skyscraper, they can't because the bridge protects much of the main sewer, water, and electrical lines running through the area (making it too expensive/inconvenient to remove) and with the bridge there it destabilizes the ground and any potential foundations laid there.
- The Brussels Premetro (tram line which goes part underground like a subway under modern Anspach Boulevard) runs in a former riverbed which had become an open sewer in the 19th century and later got drained, covered and built upon.
- Not technically a sewer, but Toronto's path is made up of numerous underground tunnels and walkways, often housing retail stores, connecting many of the major office buildings downtown and linked to the subway system.
- Even moreso with Montreal, which has a of tunnels/underground complex doubling as one massive shopping mall spanning most of downtown (The so-called "Ville Souterraine", or "Underground City" to Anglophones, is the largest underground complex in the world). Built because the extremely harsh winters tend to drive pedestrian indoors.
- Rochester, MN also has an underground walkway network that serves a large part of the city. I believe this type of infrastructure is common in cold cities.
- Further, there are sections of both Toronto and Montreal's sewers that you can walk comfortably in standing upright. People have done it (and gotten arrested), but it is definitely large enough to fit a man standing upright.
- Osaka, Japan has a network of pathways which connect several of the subway stations. The subway stations in Tokyo could count in their own right: several are huge sprawling complexes where multiple subway lines cross. Sapporo has a pedestrian tunnel system under the inner city measuring 1.7 kilometers from north to south and 1.1 kilometers from east to west.
- Seattle had a major fire in 1889, and to make sewage flow out into the sea (at high tide, it had a habit of... going the other way from outhouses) they simply rebuilt everything on top of the old foundations. That means today there is a sort of small town buried beneath downtown's streets. Highly unsafe in most of it though.
- In Cologne there is a huge hall with two candelabra in it. It was build for a visit from Kaiser Wilhelm II 
- In the Warsaw Uprising the quarter separated by Nazi forces tried to communicate with each other using the sewer system. It could be described as anything but spacious and clean. In one case a whole quarter (both soldiers and civilians) was evacuated by these means.
- The street level of Atlanta is today one story above where it was a century ago, due to a system of viaducts built to raise it out of the way of the railroad lines. When the lower level was "rediscovered" in the 1960s, it was turned into a shopping and entertainment mall. (What else?)
- Not technically a sewer, but Las Vegas has a underground flood channel system that homeless people actually live in.
- Texas A&M University has the "Steam Tunnels", a system of underground utility tunnels under the main campus originally built to pump steam from a central plant to the various buildings' basements to heat them during the winter months. Now it is used to run water and sewage pipes, electrical and phone lines, and network lines. Campus lore says that there used to be a few student "lounges" set up in intersections of the tunnels where there was a bit more space, but nowadays the access grates to the tunnels are padlocked, and exploration of the area is discouraged by the university officials.
- The University of BC in Vancouver has a similar system, but they're still easily accessible if one knows how. However, nobody goes into them but repairmen and engineering students mucking around.
- Chicago has the Deep Tunnel project, which is a pretty massive-scale water handling project that includes storm flow as well as sewage. Some of the tunnels are easily wide enough to walk through, and it's even possible to get to some of those areas via manhole.
- While not a sewer, and certainly not as extensive as the other examples on this page, Quebec city's Laval University has built a tunnel system under it's campus to link every buildings. A student could theoretically pass the whole year without ever needing to go outside, as almost every kind of services and store are available in at least one of the university's building.
- Lakehead University in Thunder Bay has a similar system of tunnels (both public access and service) for the same reason; it gets really cold in the winter. Sadly, the university has outgrown the public tunnels and only the main buildings are connected, making for a chilly walk to some classes or back to the campus residences.
- Harvard University has fairly extensive tunnels, though their accessibility varies depending on the building you're in. In some cases there are sections of buildings (like the philosophy section of the Widener Library stacks) that can only be reached through the tunnels.
- Most older large university campuses have a fairly extensive network of tunnels underneath them, generally built to pipe steam from the main physical plant to other buildings (it's cheaper and more efficient to build and run one enormous boiler, or even several smaller ones in a single location, than separate ones for each building). The tunnels were made large enough for maintenance workers to access and repair the pipes if necessary.
- Fugitive Raoul Moat evaded capture by the police in Northumberland for eight days, apparently by hiding in Rothbury's network of storm drains, popping out of manhole covers occasionally to steal vegetables from allotments, and for a stroll in the High Street.
- St. Louis, MO has a fairly large underground made up of sewer systems, old railway tunnels, various tunnels for other purposes, and lots and lots of caves (that have been mostly sealed off). Very few people (if any) in the city know exactly how extensive they all are and it is very illegal to go down into them, and for good reason. The sewers, tunnels, and caves are so full of toxic gas build up that going down into them without a copious amount of protective equipment is practically suicide, and that's assuming a collapse doesn't kill you (since the older ones aren't exactly easy to maintain).
- Most of the outer suburbs around Detroit have no sanitary sewer system; wastewater goes into septic tanks and runoff goes into a network of drains and lakes. Most of these drains are above ground and some of them are basically artificial rivers over 10 feet wide and 6 feet deep.
- Mexico City is a city suffering subsidence (sinking of buildings) at a rate of 30' per year (a lot), including their old sewage system, which is starting to flow back on itself as a consequence. Their sewage system is old fashioned in that it combines all of the sewage, instead of having separate drains for hospitals, industry, etc. To cope with this, they are currently building a huge sewage pipe which will be several meters in diameter and be able to pipe out 450 million liters of sewage per second.
- The cisterns beneath Fort San Cristobal (Puerto Rico).
- The underground tunnels of Bucharest are relatively spacious and a favorite refuge for homeless people, beggars and petty thieves. Due to the construction fever of the Communist government in the 1980s, most of the city's ground had been drilled and large concrete housings and tunnels built, for the subway system, electrical cables, hot water pipes and so on, from small 3 ft wide ones to some large enough to drive a truck inside. Some homeless people had built literal underground homes, tapping ilegally the wires and pipes for hot water, electricity and even broadband Internet.