Ключевые слова: aerial, aerial view, ancient, architecture, asen, asen fortress, asenovgrad, assen, assen fortress, assenovgrad, autumn, balkan, balkan peninsula, building, bulgaria, bulgarian, cultural, destination, europe, fortification, fortress, historical, history, landmark, landscape, medieval, mountain, outdoor, panorama, plovdiv, plovdiv region, rhodope, rhodopes, rhodopes mountain, rock, rodopi, ruins, sight, sightseeing, sunset, tourism, travel, urban, vacation, view, wall,