Pavlopetri

A UNESCO World Heritage Site and officially the world's oldest submerged town is located just off coast of southern Peloponnese region of  Laconia, Greece, 10 to 13 feet  (3 to 4 meters) below the sea level. It covers an area of 322,917 square feet (30,000 square meter) where have been found buildings, streets, courtyards, tombs and graves. Pavlopetri was built about 5,000 years ago which means that it predates the golden era of acient Greece for over two millennia. The city is believed to be submerged about 1,000 BC by an earthquake and according to some scholars, possibly inspired the Plato's story about Atlantis.