17. Bikini Bottom
First Appeared: SpongeBob SquarePants (Episode 1, May 1, 1999)
Founding Father: Stephen Hillenburg
Notable Residents: SpongeBob SquarePants, Patrick Star, Squidward Tentacles, Mr. Krabs, Sandy Cheeks
How cool is nuclear testing? Mad cool. How cool is it that below the surface of Bikini Atoll, the island made famous for "hosting" the first tests of nuclear bombs, there's a city called Bikini Bottom, home to SpongeBob SquarePants? Madder cooler. Modeled after Seattle (!), Bikini Bottom is an undersea city that makes you realize just how dumb the Snorks were. To think that there were generations raised on that milquetoast garbage instead of the surreal hijinks committed by anthropomorphic forms of sea life in BB. We love SpongeBob for being brave enough to let the floor drop out on the weirdness factor. Put your pen down on a timeline of animated shows for children and you can draw a straight line from Ren & Stimpy to Rocko's Modern Life to SpongeBob.