Medvjed Kula

This cylindrical tower (Medvjed Kula) guards the western entrance to the walled city, opposite the catacombs. It was built around 1450, shortly before the fall of the Kingdom of Bosnia, and designed to withstand the first cannonballs. The thickness of its walls varies from 4.70 to 6 m, with a diameter of 5.70 to 8.14 m and a height of around 15 m today. It's the power emanating from these walls that gives the building its name. But another version has it that condemned bears were locked up there. This is unlikely, although animal trials did exist in the Middle Ages.