Atlantis
Ἀτλαντίς
The drowned superpower that Plato wrote down.
A great island beyond the Pillars of Heracles, it attacked Athens, was defeated, and then sank in a single day of earthquakes and floods.
Plato wrote that the story came from an Egyptian priest and happened nine thousand years earlier.
His account adds that Poseidon founded the realm and that it was named after his son Atlas.
SourcesPlato, Timaeus · Critias
Commonly confused
Most scholars hold that this is not Greek mythological tradition but a story Plato invented to serve his own argument. Not a single mention of Atlantis exists before Plato.