Tešanj Castle
Bosnia and Herzegovina · Europe

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Tešanj Fortress (Bosnian, Croatian and Serbian: Tešanjska tvrđava / Тешањска тврђава), also known locally as Gradina is a fortress located in Tešanj, Bosnia and Herzegovina. It remains one of the biggest historical defensive fortifications in the country with an area of 6,296 square metres (67,770 ft2).
Adapted from Wikipedia (CC BY-SA)。Photography via Wikimedia Commons.