Ключевые слова: activity, architecture, background, blue, build, business, cement, concrete, construction, crane, dawn, development, engineering, equipment, estate, facelift, frame, growth, high, house, industrial, industry, iron, lift, machine, machinery, metal, orange, outdoors, progress, project, red, scaffolding, silhouette, site, sky, skyscraper, steel, structure, sun, sunrise, sunset, tall, technology, the city, top, tower, urban, work, yellow,