It was thought that the ancient Egyptian city of Heracleion had been lost forever when it sank into the sea over 1,500 years ago, but in 2000 the first remains of the city were discovered off the coast of Alexandria in Egypt. French archeologist, Dr Franck Goddio, came across the underwater archaeological site and, following further investigation, divers discovered sphinxes, statues, columns, temples and even the foundations of a palace that may have belonged to Cleopatra herself! Further investigations also unearthed coins and other everyday objects, as well as a number of ships, suggesting that the site was indeed the location of the 8th century BC city. Many of the objects recovered from the sea floor were also still in excellent condition, making the discovery even more incredible!
Source: 18. Cleopatra’s Heracleion. Egypt | 20 Underwater Wonders of Our Blue Planet | EarthTripper| Page 1