The foundation of this fortification was started even before the Romans conquered the region. Exact dates are unknown. It was later enhanced by the Romans, Slavs and the Ottoman forces. It has been primarily a defensive fortification. Tešanj Castle is one of the most significant and biggest castles in Bosnia, with an area of 6,296 square metres (67,770 sq ft). During the Ottoman period, the castle had a permanent army.
Castle as seen from the heart of Old town of Tešanj