1. Greek philosopher Plato once wrote that the city of Atlantis had been destroyed around 9,000 B.C. It “disappeared into the depths of the sea,” in a single day and night, he wrote, leading many to speculate that a tsunami destroyed it…

    Researchers and treasure hunters have long searched for the ancient metropolis, and it has been “found” more than once, most recently by a U.S.-led team of researchers who say they’ve located the city in southern Spain. Here, some other possible locations for the lost city of Atlantis.

    Photo: Corbis