Sopot Hill, on which the Castle rises, is located north of the village Borsh, 500m above sea level. Borsh Castle consists of surrounding walls in the form of a closed circuit. Inside it is the acropolis in the shape of a triangle. Its surface is rocky, on the west side the mountain forms some natural terraces, where a series of remnants of medieval buildings can be seen. Known as the Castle of Sopot, the Castle is centrally located in the ancient city of Borsh. The castle was built at the end of Cen. XII and beginning of Cen XIII. The castle is divided into two parts by a transverse wall, from the east to the west are built two entrances. The towers are built on the west side in Cen. XIV-XVII when artillery was used inside the castle. There are also constructions of Ali Pasha of the beginnings of Cen. XVIII. Before the vizier of Ioannina the castle was also owned by the Despotate of Ioannina, the Anjouans and the Turkish invaders. In 2011 the lightning tract damaged the perimeter wall of the Castle on the southeast side and the dome of the Mosque. The walls of the castle are built of quadrangular stone blocks and horizontal joints. The outer sides are made with the technique of rough carving with a hammer. The width of the walls exceeds 3.5m.