Ключевые слова: abstract, architecture, background, backgrounds, blue, building, building exterior, built structure, construction, construction frame, construction industry, construction site, design, detail, electricity, engineering, facade, frame, futuristic, geometric shape, girder, glass, glass material, high, industrial, industry, iron, iron metal, light, line, metal, modern, office, office building exterior, outdoors, pattern, reflection, roof, rooftop, simplicity, sky, steel, structure, sunbeam, technology, tower, transparent, window,