Ключевые слова: architecture, area, austria, austrian, bar, blue, bridge, building, buzzer, capital, city, cityscape, contemporary, danube, day, dc, donauturm, environment, europe, float, floating, growth, landmark, landscape, leisure, modern, nations, office, panorama, pontoon, quay, recreational, relax, restaurant, river, riverside, shore, sky, skyline, skyscraper, skyscrapper, tower, un, united, urban, vienna, water, yellow,