Located just outside of Tokmok, Kyrgyzstan, is the famous Burana Tower.  It is a must visit for those headed to Lake Issyk Kul.  There is tale that explains why the Burana Tower was built:

A legend connected with the tower says that a witch warned a local king that his newly-born daughter would die once she reached the age of eighteen. To protect her, he built a tall tower where he sequestered his daughter. No one entered the tower, except the daughter’s servant who brought her food. The daughter grew up alone and became a beautiful young lady. One day, however, a poisonous spider was hiding in the food brought by the servant. The spider bit the girl, and she died in the tower, at the age of eighteen.  Source: Wikipedia

The story is similar to the Turkish Maiden’s Tower Legend.