The castle of Sokolac is situated on one hill on the east side of the hill Debeljača on the left bank of the river Une. The oldest charter in which Sokolac is mentioned dates from the 14th century. For a long time the town was exposed to the battles between the Bosnian crown and the Kings of Sigismund of Luxemburg and Ladislaus of Naples.
The Ottoman army occupied the fort in 1592. At the site of today’s fortress in the Bronze Age there was a prehistoric fortress of 670 x 170 meters. The traces of prehistoric ceramics found at the time of archaeological excavations indicate the period from the 10th to the 9th centuries BC, which coincides with the time of of Japodian settlements on the river Una in the nearby Ripač.
Sokolac Fort was restored by Bihac Mayor Lothar von Berks in 1897. He began to charge entrance to this old town, which represents the beginnings of tourism in these areas.The fortress was declared a national monument.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.