Upper Castle

The Vilnius Castle Complex is a group of cultural, and historic structures on the left bank of the Neris River, near its confluence with the Vilnia River, in Vilnius, Lithuania. The buildings, which evolved between the 10th and 18th centuries, were one of Lithuania's major defensive structures.The complex consisted of three castles: the Upper, the Lower, and the Crooked. The Crooked Castle was burned down by the Teutonic Knights in 1390 and was never rebuilt.

Source: Wikipedia