medieval fortress of bulgarian tzar samuil near village of kliuch, bulgaria

1014 ancient antique architecture balkan belasitsa blagoevgrad building bulgaria bulgarian city cultural culture destination empire europe first fort fortification fortress hill historic historical history kliuch landmark landscape macedonia medieval monument mountain museum ograzhden old outdoor panorama petrich region ruins samoil samuel samuil sight sightseeing stronghold strumeshnitsa tourism travel tsar tzar village wall