Ключевые слова: architecture, background, blue, builder, building, built, business, cement, city, concrete, construction, crane, development, engineering, equipment, estate, exterior, frame, heavy, higher, home, house, housing, industrial, industry, lifting, lifts, machina, machinery, metal, modern, new, project, safety, scaffolding, sites, sky, skyscraper, steele, structure, tall, technology, the transportation, tower, transport, urban, water, worker, yellow,