Ключевые слова: aerial, aerial view, ancient, autumn, balkan, balkans, biala, buildings, bulgaria, byala, classic, coast, coastline, cultural, danube plain, danubian plain, destination, drone, environment, europe, european, exterior, fall, hill, landmark, landscape, nature, outside, park, past, ruse region, sight, sightseeing, street, tourism, town, trail, travel, tree, urban, view, water,