Zelda 64: Ganon's Castle

Secret of Mana: The Mana Fortress

Final Fantasy 3/6: The Floating Continent

Final Fantasy: Although it is not seen on the map, the Sky Palace floats. (I remmeber someone saying they thought it was a Space Station.)

Everything changes..changes..
Things are changing constantly...
Everything changes...changes...It's evolutionary.
Everything changes...changes..
Changing all the time, playing with your mind
Modified or rearranged, everything has got to change