Akrei Citadel ~ Duhok south of Kurdistan

The Citadel lies in the northern part of Akra town, 450 m above ground level. It was built by prince Zand 580 BC on top of a high mountain.The citadel is four pillared of 110m each. It consists of several floors; the upper floor is known as the prince’s residence, the middle was used as food storage room, and the basement consists of a round meeting hall and a flat rock in the middle. Also, there is water well and an eagle-like room which is called the jail. The rooms are wide and were built in geometrical shapes. 
Source:Official Site of General Board of Tourism of Kurdistan