Nevşehir Castle

Nevşehir Castle (Nevşehir Kalesi) is a historic castle in the city of Nevşehir, overlooking the underground city of Kayaşehir. It was a fortress for defensive, military purposes.

History
Not much is known about Nevşehir Castle, it is theorized to have been built by the Seljuks around 1100, though it also theorized to have been built by the Byzantines as a military outpost.