Ключевые слова: architecture, background, block, blue, build, buildings, business, cement, city, concrete, construction, crane, development, engineering, equipment, estate, hard, high, homes, house, industrial, industry, iron, job, labor, lift, machine, make, material, metal, new, people, progress, safety, scaffold, scaffolding, silhouette, site, sky, steel, structure, tall, tool, towers, urban, windows, work, worker,