Ключевые слова: abstract, apartment, architecture, art, blue, building, business, buy, center, city, cityscape, construction, design, district, downtown, dusk clouds, dutch, europe, exterior, facade, geometric, harbor, holland, house, landmark, line, living, mathematic, mathematical, modern, netherlands, office, outdoor, perspective, reflection glass, residential, rotterdam, sale, shape, shop, sky, skyscraper, structure, summer, tall, tower, town, unique buildings, urban, window,