The Legend of Maiden's tower:
There are many legends about the construction of the tower and its location. According to the most popular Turkish legend, a sultan had a much beloved daughter. One day, an oracle prophesied that she would be killed by a venomous snake on her 18th birthday. The sultan, in an effort to thwart his daughter's early demise by placing her away from land so as to keep her away from any snakes, had the tower built in the middle of the Bosphorus to protect his daughter until her 18th birthday. The princess was placed in the tower, where she was frequently visited only by her father.
On the 18th birthday of the princess, the sultan brought her a basket of exotic sumptuous fruits as a birthday gift, delighted that he was able to prevent the prophecy. Upon reaching into the basket, however, an asp that had been hiding among the fruit bit the young princess and she died in her father's arms, just as the oracle had predicted. Hence the name Maiden's Tower.