Ключевые слова: abstract, architecture, background, blue, building, buildings, business, centre, city, cloud, clouds, construction, contemporary, corporate, district, downtown, estate, exterior, facade, finance, financial, frame, futuristic, glass, high, highrise, mirror, modern, office, outdoor, pattern, perspective, real, reflection, sky, skyscraper, square, steel, structure, tall, tower, trade, urban, window,