On the right bank of the Ondava River to the south of Svidník there stands a hill called Kaštielik, which once had a castle or fortified residence. According to archaeological research, the fortified construction could be as old as from the 15^th century. In the autumn of 1944, Kaštielik was the site of heavy fighting during the Dukla Offensive. Traces of trenches from World War I can be found here too. Nowadays the hill is covered with open oak and beech woodland.