Blagaj Fort

Blagaj Fort (locally known as Stjepan grad) is a town-fortress complex near the town of Blagaj, Bosnia and Herzegovina. The old Blagaj Fort (Bona, Stjepan grad) was built on a high, inaccessible karst hill, at an elevation of 310 metres (1,020 ft) above sea level and 266 metres (873 ft) above the source of the river Buna. Blagaj Fort is 275 metres (902 ft) above sea level.

• http://en.wikipedia.org/wiki/Blagaj Fort