Ключевые слова: aerial, architecture, attraction, building, bulgaria, bulgarian, capital, center, city, cityscape, communist, conference, culture, drone, dusk, europe, event, exhibition, famous, fountain, garden, hello, landmark, landscape, leisure, mountain, national, ndk, of, outdoor, palace, panorama, park, relax, scene, scenic, sky, skyscraper, sofia, square, sunset, tourism, tourist, tree, urban, vitosha, water,