Quoting Roswitha:

Legend has it that once there was a king who had a beautiful daughter. At her birth, the palace soothsayer predicted the princess would die from a snake bite on her sixteenth birthday. To shield his daughter from harm, the king built a castle for her on the little island.
On her sixteenth birthday, the princess received a basket of fruit in which was hidden a snake. The prophecy was fullfilled when the snake bit the princess and she died. To this day, the castle is called Maiden´s Castle or Kizkalesi.
http://www.muraservices.com/muraservices/Yaka/e-kizkalesi.htm