There had been a powerful empire located to the west of the Pillars of Hercules (what we now call the Straight of Gibraltar) on an island in the Atlantic Ocean. The nation there had been established by Poseidon, the God of the Sea. Poseidon fathered five sets of twins on the island. The firstborn, Atlas, had the continent and the surrounding ocean named for him. Poseidon divided the land into ten sections, each to be ruled by a son, or his heirs.
The capital city of Atlantis was a marvel of architecture and engineering. The city was composed of a series of concentric walls and canals. At the very center was a hill, and on top of the hill a temple to Poseidon. Inside was a gold statue of the God of the Sea showing him driving six winged horses.
About 9000 years before the time of Plato, after the people of Atlantis became corrupt and greedy, the gods decided to destroy them. A violent earthquake shook the land, giant waves rolled over the shores, and the island sank into the sea, never to be seen again.