early medieval fortress of bulgarian tsar samuel near village of kliuch

1014 ancient antique architecture balkan basil belasitsa blagoevgrad building bulgaria bulgarian cultural destination early empire europe first fortification fortress hill historical history kliuch landmark macedonia medieval monument mountain museum near ograzhden outdoor panorama peninsula petrich region ruins samuel samuil scene sight sightseeing stronghold strumeshnitsa sunny tourism travel tsar vacation village wall watchtower