Returning from the new Year's welcome from Fužine to Karlovac, we just happened to notice a bunker along the road. Intrigued by this bunker we are engaged in research and we decide to try to discover and collect as much information as possible about the locations and the state of the remaining bunkers in the area of CROATIA. Blockhausi are a type of bunker built in the period from 1941. To 1943. With a basic purpose to ensure the functioning of rail transport. The earliest versions of these bunkers are rectangular, and later appear in the form of a hexagon, round and polyonal. The Germans and Italians were built on our territory for the purpose of defending railway routes, and after the war most of them were mined and destroyed. The inner walls are built of bricks of about 20 cm thick, and the exterior of the stone is approximately 40 cm thick. Below we bring you an interactive map with the location of the bunkers we have explored, and the details of each bunker you can read on our blog.