Fortress Kostajnica, Medieval fortress in Hrvatska Kostajnica, Croatia.
The fortress includes three distinct towers and solid stone walls positioned along the banks of the Una River at the Bosnia and Herzegovina border.
The Ottoman Empire gained control of Kostajnica Fortress in 1556 and maintained their occupation of the stronghold until its liberation in 1688.
Several noble Croatian families, including the Frankopan, Lipovecki, Tot, Benvenjud, and Zrinski, have maintained ownership of the fortress throughout its existence.
The Croatian Ministry of Culture manages regular conservation work to maintain the structural integrity of the fortress for visiting tourists.
The fortress contributed to the defense network of the Croatian Kingdom, serving as a strategic military point against Turkish advances in the region.
GPS coordinates: 45.22111,16.54722
Latest update: March 6, 2025 11:07
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