Atlantis

Atlantis is a sunken city.

History
Atlantis is mentioned in The Stonecutters' song.

While Homer and Bart is on a boat fishing, but a storm causes them to shipwreck. After the storm, Homer and Bart are rescued by the Japanese fishing ship Iruka-koroshi-maru (いるかころし丸 Dolphin Killer), but are thought dead by all on the island. During the funeral, however, they appear. Homer tells the story of how they survived, with him visiting Atlantis underwater, finding the atlantean. However, it was just a dream due to him getting suffocated by the seaweed. He is saved by Bart and then taken aboard the ship. When he finds out he's back to the surface world, Homer goes back underwater to be suffocated again, but is saved again.

Non-canon
Dionysus grabbed one of Zeus' thunderbolts, and hurled it to earth. Zeus then became angry with Dionysus because he had just destroyed Atlantis.