Ostrožac castle is one of the most visited locations in Cazin. The castle dates back to the 13th century when Ostrožac was part of property of the noble house of Babonić family. In 1592 it was captured by the Ottoman Turks and established as an Ottoman province of Bosnia. The castle was built between 1900 and 1906 by Major of Bihać Lothar Von Berks as a birthday present for his wife, member of the Habsburg family.