[[quoteright:270:http://static.tvtropes.org/pmwiki/pub/images/Dinosausbeforedark_3933.jpg]]
[[caption-width-right:270:This book inspired a plethora of equally outrageous adventures.]]

''The Magic Treehouse'' is a successful series of children's books written by Mary Pope Osbourne. There are over fifty books in the series so far, not counting the research guides that go along with them. The books are about two kids from Frog Creek, Pennsylvania, siblings/[[KidHero kid heroes]] Jack and Annie. In the inaugural series, Morgan le Fay orders them to go on missions through time and all around the world to solve ancient riddles, save ancient stories, and become Master Librarians. That was for the first 28 of the books, and the next series was about Jack and Annie going on Merlin Missions ([[ExactlyWhatItSaysOnTheTin missions directed by Merlin the magician]]), traveling to places like Camelot. The books teach kids about history and the different cultures that Jack and Annie visit.

There's also a [[UsefulNotes/{{Japan}} Japanese]] adaptation with Main/{{Manga}} [[ContemptibleCover illustrations]]. They all contain paper dolls of Jack and Annie with outfits corresponding to the stories. The first 28 volumes were published into 14 Japanese volumes, two stories to a book. After that, each book was published individually. There was also an anime movie by Creator/AjiaDo based on the book series.

As of August 2012, nonfiction companions called Magic Treehouse Fact Trackers books have been written for 27 of the original series.
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!!Tropes used by the series:

* AddedAlliterativeAppeal: Most of the series
* AmericanCivilWar: ''Civil War On Sunday'' and ''Abe Lincoln at Last''
* UsefulNotes/TheAmericanRevolution: ''Revolutionary War On Wednesday''
* AncientEgypt: ''Mummies in the Morning''
* {{Animorphism}}: Teddy the dog is actually a human boy [[spoiler: who accidentally put himself into a spell by mistake]]. Also, Morgan spends four books as a white mouse due to a prank pulled by Merlin.
** Jack and Annie also get into this too. They were transformed into ravens along with Teddy in ''Haunted Castle on Hallow's Eve'' and were turned into dogs in ''Dogs in the Dead of Night''. [[spoiler: Annie also transformed two rival wizards into ducks in ''Blizzard of the Blue Moon''.]]
* ArbitrarySkepticism: Annie is afraid to enter an Old West ghost town. Jack attempts to reassure her by saying there's no such thing as ghosts, but [[ContinuityNod as she points out]], this is clearly untrue, as they ''met'' one in ancient Egypt.
* BearsAreBadNews: Subverted in ''Stage Fright On A Summer's Night''. The dancing bear's actually one of the nicer characters.
** And averted in ''Polar Bears Past Bedtime'' with a mother polar bear and her adorable cubs.
* BeethovenWasAnAlienSpy: For some reason a lot of the {{Historical Domain Character}}s know a lot more about the tree house and the kids' missions than they should and are suspiciously cooperative.
** This is averted in ''Good Night For Ghosts'' with Louis Armstrong. He has no clue about it and is just too busy making money for his family. After using the Wand of Dianthus and Louis having no sense of what to do next [[spoiler: Annie tells Jack that they actually have to show him the book that teleported them to his time to set things straight.]]
** [[spoiler:Alexander Graham Bell, Thomas Edison, Louis Pasteur and Gustave Eiffel]] from ''Night of the New Magicians'' seem to think that Jack and Annie are crazy. They're nice about it though.
* BittersweetEnding: ''Tonight on the Titanic''. ForegoneConclusion, obviously, but Jack and Annie manage to save two children.
** ''Perfect Time For Pandas'' has got to be an ironic title, considering that Jack and Annie were transported to the time of the Great Sichuan Earthquake of 2008. The Result? [[spoiler: Only 2 out of 16 roly-poly pandas in the reserve that they traveled to live.]]
* BrattyHalfPint: Wolfie in ''Moonlight on the Magic Flute'' (WolfgangAmadeusMozart [[YoungFutureFamousPeople as a child]]).
* BrickJoke: In books 32-36, Annie and Jack are given a book of spells from their friends. Annie is constantly trying to find a use for the spell 'Turn People into Ducks', but is constantly turned down by her brother. [[spoiler: When they are trying to save a unicorn in ''Blizzard of the Blue Moon'' from two apprentices from a dark wizard, she immediately uses the spell explaining that she memorized it a long time ago.]]
* BullyHunter: Annie in ''Twister on Tuesday'' when her brother is being picked on.
* CatsAreMagic: ''Mummies in the Morning'' has a cat that leads Jack and Annie to a pyramid, and successfully leads them out of one. [[spoiler: It's revealed in the next book, that this was Morgan looking after them.]]
* CatsAreMean: ''Sunset of the Sabertooth''.
* ChekhovsGunman: Teddy the dog is actually a boy, and he returns in a later book to help Jack and Annie.
* CowboyEpisode: ''Ghost Town at Sundown''.
* CutenessProximity: Annie to the pandas in ''Perfect Time for Pandas''.
* DeliberateValuesDissonance: Annie runs into this at least twice (''Hour Of The Olympics'' and ''Stage Fright On A Summer's Night'') concerning the roles of women.
* TheDitz: Annie has her moments, her being the younger of the two.
* DownerEnding: ''Vacation Under The Volcano'' takes place in a nice peaceful town called Pompeii...
** In ''Abe Lincoln at Last'', Jack and Annie befriend President Lincoln's young son Willie. When they return, they find out that he [[spoiler:died of typhoid fever a year later.]]
* {{Edutainment}}
* EverythingsBetterWithDinosaurs: ''Dinosaurs Before Dark'', the very first book.
* KangaroosRepresentAustralia: ''Dingoes At Dinnertime'', had Jack and Annie meeting up with a kangaroo and taking care of her joey.
* EverythingsBetterWithMonkeys: ''Tigers at Twilight'' and ''Good Morning, Gorillas'' had monkeys.
* EverythingsBetterWithPenguins: ''Eve of the Emperor Penguin'', and the titular penguin Penny who lives in Camelot.
* EverythingsSquishierWithCephalopods: ''Dark Day In The Deep Sea'' has this with a Kraken.
* ExactWords: In ''Blizzard of the Blue Moon'', Jack and Annie need to call out the name of a unicorn known as 'Divine Flower of Rome'. [[spoiler: Unfortunately, the poem didn't state that the two had to say his name in ''Latin''--which is Dianthus--and thus got them into a bit of trouble later on.]]
* ExtyYearsFromNow: ''Midnight on the Moon'' takes place 40 years in the future (the book was made in 1996, so it takes place 2036)
* ForegoneConclusion: In ''Earthquake in the Early Morning'', Jack read that many of the books that were being transferred were all going to burn...unfortunately, the librarian didn't listen to him...
* FourIsDeath: Each arc is made out of 4 books together and something happens within each one of them. Most notably is arc 21-24 which has (In order): Civil War, Revolutionary War, Twisters and the San Francisco Earthquake.
* FreeRangeChildren: The trope is averted by having no time pass--or at most ten minutes--the while the treehouse takes the eight and seven year old to anywhere they want.
* FriendlyPlayfulDolphin: In ''"Dolphins At Day Break,"'' Jack and Annie are saved by friendly dolphins that allow Jack and Annie to ride them.
* GenkiGirl: Annie.
* GirlishPigtails: Annie
* HauntedCastle: ''Haunted Castle on Hallow's Eve''
* HeroicDog: The subject of the book ''Dogs in the Dead of Night''.
* GreenAesop: Occasionally.
* HistoricalDomainCharacter:
** [[TheVirginQueen Elizabeth I]] and Creator/WilliamShakespeare -- ''Stage Fright On A Summer's Night''
** GeorgeWashington -- ''Revolutionary War On Wednesday''
** LeonardoDaVinci -- ''Monday With A Mad Genius''
** Creator/{{Plato}} -- ''Hour Of The Olympics''
** WolfgangAmadeusMozart -- ''Moonlight On The Magic Flute''
** LouisArmstrong -- ''A Good Night For Ghosts''
** Creator/CharlesDickens-- ''A Ghost Tale For Christmas Time''
** ThomasEdison -- ''Night of the New Magicians''
* HornyVikings: ''Viking Ships At Sunrise''
* InjunCountry: ''Buffalo Before Breakfast''
* InThePastEveryoneWillBeFamous: Occurs several times, as evident with the other trope entries on this page.
* {{Invisibility}}: The supposed ghosts in ''Haunted Castle on Hallow's Eve'' are actually [[spoiler: three kids and their dog trapped in their state because the Raven King stole the Diamond of Destiny they were supposed to guard.]]
* KangarooPouchRide: Inverted in ''Dingos at Dinnertime.'' The Joey hops into Jack's backpack believing that it's a pouch.
* KingArthur: Well, Morgan lives at Camelot.
* MagicMusic: The Wand of Dianthus becomes a magical music instrument in books 41-44, but Jack and Annie must make up their own lyrics for each song.
* MagicWand: The Wand of Dianthus, a unicorn horn.
* TheMiddleAges: ''The Knight At Dawn''
* {{Mummy}}: ''Mummies in the Morning''
* TheMusical: Information for the curious [[http://mthmusical.com/#/home here]]. It involved Theatre/{{Camelot}}.
* MysteriousProtector: Two hooded figures protect Jack and Annie throughout books 33 to 36. [[spoiler: It's Teddy and Kathleen, spying on them to make sure the siblings are doing their job.]]
* {{Ninja}}s: ''Night of the Ninjas''
* NotAllowedToGrowUp: Averted. It seems this way as we are constantly told that Jack is 7 and Annie is 6. But in ''Winter of the Ice Wizard'', Annie states that she's 9 and Jack is already 10 which means at most 3 years have past since that time.
* OhCrap: Whenever something bad happens, poor Jack will be thinking this.
* OlympicGames: The original ones, natch.
* OutdoorsyGal: Annie is the first one to climb into the treehouse that will take them anywhere and the first one to jump into adventure when they get where they're going.
* PandaingToTheAudience: ''Perfect Time For Pandas''.
* PantheraAwesome: ''Lions At Lunchtime'' and ''Tigers at Twilight''.
* {{Pirate}}s: ''Pirates Past Noon''
** PirateParrot: Also seen. [[spoiler: Was really Morgan le Fay keeping an eye on the kids.]]
* RavensAndCrows: The subject on ''Haunted Castle on Hallow's Eve''.
* RhymesOnADime: The poems and magic spells that are used in the book all rhyme.
* ReptilesAreAbhorrent: The HUMONGOUS Sea Serpent in ''Summer of the Sea Serpent''.
* SavvyGuyEnergeticGirl: Jack and Annie are a sibling example.
* SpeaksFluentAnimal: Somehow Annie is able to communicate with animals, be it a pterodon or a raven.
* SpidersAreScary: To Annie they are. And it didn't help that in ''Summer of the Sea Serpent'' they needed help from the Spider Queen...
* StoryArc: Usually each arc takes place over four books.
* TakenForGranite: Happens to the royal court in ''Christmas At Camelot''
** [[spoiler: And books 45-48 show that poor Penny's under this spell too!]]
* TentacleRope: [[http://static.tvtropes.org/pmwiki/pub/images/mth_1661.jpg The cover]] of Japanese book #25.
* TimeTravel: And HOW.
** Unfortunately they can't change any thing that will happen (Pompeii and Titanic are prominent examples) but they can alter a few stuff. In ''Civil War On Sunday'' [[spoiler: they save a drummer boy who would become their great-great-great grandfather]] and ''Earthquake in the Early Morning'' had them [[spoiler: be taken in a photograph with a piece of wood that had words of hope on it.]]
* ThanksgivingEpisode: ''Thanksgiving On Thursday'', with the original Pilgrims and Indians.
* ThemeNaming: The books are named after a time of day, a day of the week, or a holiday.
* TheMessiah: Annie has to help EVERYONE, nevermind the mission at hand.
** Although to be fair, they actually help out on the mission so it is justified.
* TreehouseOfFun: Treehouse of MAGIC!
* {{Unicorn}}: The subject of ''Blizzard of the Blue Moon''.
* VictorianBritain: ''A Ghost Tale for Christmas Time''. Creator/CharlesDickens is a character.
* [[WhyDidItHaveToBeSnakes Why Did It Have To Be Spiders?]]: Annie can go through just about anything...but has a CRIPPLING fear of spiders. Shown prominently in ''Summer of the Sea Serpent.''
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