Perhaps the most famous lost city on this list, we all know of Atlantis’s demise 10,000 years ago, destroyed in one night by earthquakes and a flood. Several researchers claim that Atlantis really existed – that the empire embraced parts of Africa, Asia, Europe, and the Americas. Others firmly believe the Atlantean survivors were responsible for the construction of Stonehenge and the pyramids. According to Plato, Atlantis was ruled by ten kings; the royal palace had hot and cold running water; and the largest temple on the central island was dedicated to Poseidon and Cleito.