Ключевые слова: architecture, attraction, build, building, bulgaria, bulgarian, capital, center, city, cityscape, cloud, communist, comunist, concert, concrete, conference, congrese, congress, convention, culture, europe, event, exhibition, famous, festival, garden, hall, landmark, large, multifunctional, national, ndk, outdoor, palace, panorama, panoramic, park, scene, sightseeing, sky, sofia, southeastern, square, tourism, tourist, tourist icons, tourists sightseeing, urban, vast, view,