Ключевые слова: aerial, architecture, austria, austrian, blue, bridge, building, capital, center, church, city, cityscape, dandube, danube, day, donau, downtown, europe, european, green, high, historic, landmark, landscape, modern, monument, outdoor, panorama, park, residential, river, road, roof, sky, skyline, spring, street, tourism, tower, town, transport, urban, vienna, view, wien,