Anevo Fortress
Sopot, Bulgaria
The Anevo Fortress (Bulgarian, Anevsko kale) or Kopsis is a medieval castle in central Bulgaria, the ruins of which are located some 3 kilometres (1.9 mi) from the village of Anevo in Sopot Municipality, Plovdiv Province. Constructed in the first half of the 12th century, it lies on a steep hilltop at the southern foot of the Balkan Mountains, not far from the Stryama river. In the end of the 13th century, the fortress was the capital of a small short-lived quasi-independent domain ruled by the brothers of Tsar Smilets of Bulgaria, Voysil and Radoslav.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).