This year the Semberia Museum and the Gradiška Heritage Museum mark a significant anniversary - 50 years of their existence.
The Semberija Museum in Bijeljina was created from the Semberija Museum Collection, founded on October 28, 1970. Since 1972, the Museum Collection has begun a major action of collecting archaeological, ethnological and historical material, in which residents of Semberia and the region of Podmajica participated massively over the next decade. Particular attention was paid to the collection of movable cultural assets and the traditional life and culture of the people of the Sembersko-Podmajic region and the town of Bijeljina from the first half of the 20th century. The Semberia Museum is the central regional museum institution of Semberia and contains three permanent exhibitions, archeological, ethnological and historical, with over 10,000 exhibits.
The permanent museum exhibit "Roads of Victory" was opened on September 19, 1970, and restored and supplemented in 2015, it is taken as the beginning of operation of the museum in Gradiška. The Department of History deals with the archiving of historical material from the Austro-Hungarian and Kingdom of the Serbs, Croats and Slovenes from the area of the Bosnian-Herzegovinian district. In addition to frequent presentations of its research through visiting exhibitions and catalogs, the museum formed a permanent archeological exhibit in 2016 under the title: "The archeological treasure of the municipality of Gradiška - from the Neolithic to the end of the Middle Ages". The largest systematic research was carried out by the museum in the Lower Valley, the Cultural - Historical Complex of the Monastery - Karanovac and the Early Byzantine town of Balkis in Bakinci. There are currently about 4,500 museum objects in the museum.
