Ключевые слова: ages, ancient, antique, architecture, balkan, balkan mountains, building, bulgarian, byzantine, byzantium, christian, christianity, church, clouds, culture, destination, etropole, europe, forest, historical, history, holy trinity, landmark, landscape, medieval, middle, monastery, monastery of the holy trinity, monument, mountain, nature, old, orthodox, religious, sight, sightseeing, sofia province, sofia region, stara planina, stone, tourism, touristic, travel, tree, varovitets, village,