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