The name of the Yerabatan Sarayı translates as 'sunken palace'. This underground water deposit is built in the 6^th century and can hold 80.000 m³. In the water live all kinds of fish, big and small, grey and orange. The Osmans, who captured the city in 1453, didn't know the cisterns were there, until they saw people catching fish through small holes in the street.

You can walk between the dim-lit columns over wooden walkways. At the end you find two heads of Medusa, one upside down and one tilted. No-one knows why, but they are sure this was done on purpose. You can read all the stories when walking to them.