Zvečaj fortress - Credit: Wikimedia Commons
Zvečaj fortress is ruined castle in Rekavice, Bosnia and Herzegovina. It was a strategically very important fortress in medieval Bosnia. Its ruins can still be found on the southern side of the steep slope in the Vrbas canyon. They are located about 10 km upstream from Banjaluka, or 40 km downstream from Jajce. Read more on Wikipedia
Source: en.wikipedia.org