Located at the elevation of 1114 metres above the Rhodope Mountains in the small village of Ustra, the Fortress Ustra encompasses 1286 square metres with a height of 113 metres. Surrounded by towering rugged cliffs, the Fortress Ustra and its walls are built of stone blocks and surprisingly they are well preserved. You can see one semicircular and two rectangular towers which are preserved quite nicely with their three floors and the internal staircases remaining intact. You can enter the fortress from the eastern entrance to explore the southern section of the complex where 8 three storey buildings are preserved. Some of the exhibits bear witness to its construction during the tenth century.

• Rented Car/ Taxi