Koznik
Koznik Castle is a medieval castle in central Serbia, 10 km northwest from the town of Aleksandrovac, on a hillside of Kopaonik, on the right bank in the upper flow of the Rasina river.
The castle was built on top of a steep hill dominating the surrounding terrain at 920 m altitude.
Text adapted from Wikipedia, CC BY-SA 4.0. Photograph: Wikimedia Commons (see Commons), Wikimedia Commons.