Pavlopetri is the oldest underwater city in the world: archeologists have determined that Pavlopetri dates from Minoan times, over 5000 years ago.
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Atlantis, for example, is one of the most famous lost worlds and despite most people believing the underwater city to be the stuff of myths and legends, it hasn't stopped archaeologists searching for it.
A U.S.-led research team may have finally located the lost city of Atlantis, the legendary metropolis believed swamped by a tsunami thousands of years ago, in mud flats in southern Spain. This is the power of tsunamis, head researcher Richard Freund told Reuters.