Zvornik fortress

Zvornik fortress (Bosnian name: Kula grad, English: Tower City) is a medieval castle located in Zvornik, Bosnia and Herzegovina, on the mountain Mlađevac overlooking the Drina Valley.

History
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.

Austria-Hungary
Part of the structure was destroyed in 1878 during the Austro-Hungarian invasion of Bosnia and Herzegovina.

Bosnian War
Beginning on 8 April 1992, about 300 soldiers of the Army of the Republic of Bosnia and Herzegovina defended the fortress from Serb soldiers of the Yugoslav People's Army during the first stages of the Bosnian War. Following the Bosnian War, Zvornik became a part of Republika Srpska and the new Serb government had a church built on the grounds of the fortress and relocated a church bell from the village of Divič to the new church to mark their "victory" over Bosniaks.

In May 2013, the remains of several war victims from the 1990s conflict were uncovered in Kula grad.