Ключевые слова: architecture, austria, background, blue, building, business, center, centre, city, danube, district, donau, donauturm, europe, financial, glass, grass, green, grey, high, house, international, landmark, landscape, life, line, modern, nations, new, office, outdoor, park, red, reflection, relax, scene, sight, sky, structure, top, tourism, tower, tree, united, uno, urban, vienna, view, white,