Ключевые слова: aerial, architecture, austria, bridge, building, capital, city, cityscape, danube, day, district, dusk, environment, europe, green, growth, highway, horizon, interchange, kahlenberg, landmark, landscape, light, modern, nature, new, outdoor, overpass, panorama, residential, river, road, sky, skyline, skyscraper, street, summer, sunset, tourism, transportation, travel, twilight, valley, vienna, view, water,