Ключевые слова: above, aerial, architecture, blue, building, bulgaria, bulgarian, city, cityscape, cloudscape, cloudy, day, exterior, fortress, hill, house, landmark, landscape, mountain, nature, outdoor, outdoors, ovech, panorama, panoramic, provadia, river, roof, scene, skirt, sky, skyline, street, summer, top, tourism, town, travel, urban, valley, view,