In particular Mirrodin's metal fields, Ravnica's city-scapes and Zendikar's impossible rock formations. This is particularly noticeable with the full-card art variants for basic lands.
Many of the newer land cards from blocks go together with other like-blocked, same colored, lands to make large, overly detailed pieces of art.
The Invasion basic lands were particularly impressive, with all of the five basic land types having at least one example each of what could be considered the "definitive" Plains/Swamp/whatever.
A handful of Yu-Gi-Oh! TCG Field Spells depict some absolutely gorgeous scenery.
As does the Pokémon TCG. A lot of the backgrounds in the card illustrations are gorgeous, especially in the Holon series.
The setting of Mortasheen has a lot of this for its weird and wonderful locations, which are macabre but not so depressing that they fall into Scenery Gorn. For example, there's the Corpse Sea, a crowd of zombies so vast that it actually qualifies as a sea, the Flesh Forest, a forest made out of meat due to bio-experiment runoff, and the Smut, a desert dominated by a sentient bone-collecting fungus.