 The medieval town of Zvornik called "Đurđevgrad" or "Kula Grad" was first mentioned as a property of Bosnian medieval feudal family Zlatonosović in 1410 when Hungarian King Sigismund was in the area.It was probably built in the 12th or 13th century and is one of the largest medieval fortresses in Bosnia and Herzegovina.Part of the structure was destroyed in 1878 during the Austro-Hungarian invasion of Bosnia and Herzegovina.