Port Royal, Jamaica Once referred to as the ‘Wickedest City on Earth’ (because of its rampant piracy, prostitution and rum consumption), part of Port Royal sank after an earthquake in 1692. The ruins scattered in the Kingston Harbor, and currently, the remains of the city encompasses 13 acres at depths of up to 40 feet. Archaeological investigations of the site began in 1981, led by the Nautical Archaeology Program of Texas A&M University. The investigations unearthed historical documents, organic artefacts and vast amount of architectural debris. Yonaguni-Jima, Japan Some 68 miles past the east coast of Taiwan, off the coast of Yonaguni Islands, a sunken ruin was discovered by a sport diver, in 1995. The ruins are estimated to be around 8,000 years old, however, it is still unclear which missing city they made up. The most spectacular discovery amongst the submerged ruins is a large pyramid structure, finely designed archways resembling the Inca civilizatio