Ключевые слова: aerial, architecture, austria, austrian, blue, bridge, bridge built structure, building, canal, capital, capital city, city, cityscape, color image, danube, danube river, day, dc, destination, donau, downtown, dusk, europe, famous, historic, horizontal, landmark, modern, night, outdoors, panorama, panoramic, park, river, sky, skyline, skyscraper, summer, sunset, tourism, tower, travel, twilight, urban, vienna, vienna austria, view, water, wien,