It is called the Sunken City as the historical buildings on Kekova Island sank into the water as a result of various earthquakes.
Staircases descend into the sea, whole rooms lie submerged whilst others stand proud in the shallow water, a testament to a civilization past.
Tour itinerary:
Drive to Ücağiz where you take a glass bottomed boat to explore the ruins of the sunken city, Kekova Island and Simena. Lunch is served on board and there are numerous opportunities for swimming.