Ключевые слова: architecture, art, attraction, autumn, balkans, build, building, bulgaria, bulgarian, capital, cherni vrah, city, cityscape, countryside, culture, europe, event, fall, famous, history, landmark, landscape, large, monument, mountain, national, national park, nature, outdoor, panorama, panoramic, park, peak, scene, sight, sightseeing, sky, sofia, square, tourism, tourist, urban, vast, view, vitosha, vitosha mountain,