Alinja Tower

The Alinja Tower, also known as Alinjagala, Alinja-gala or the Armenian fortress of Yernjak up to the 14th century, is a tower located to the west of Khanega village, not far from Julfa city in Azerbaijan, on the right coast of the Alinja River, higher of the Armenian monastery St. Karapet, on the top of Alinja Mountain. The tower was one of the strongest defensive buildings of its time.

Source: Wikipedia