Farpoint Station

Star Trek: The Next Generation

Episode: TNG 101 - Encounter at Farpoint, Part I

Initially thought to be a large spaceport on Deneb IV, the station was actually a giant, shape-shifting lifeform, forced to assume the form of the base by the natives of Deneb IV, the Bandi.

Thanks to the intervention of the U.S.S. Enterprise-D, the creature was able to return to space.