Ключевые слова: activity, apartment, architect, architecture, blue, built, business, cement, cloud, color, concrete, construction, crane, development, engineer, engineering, equipment, exterior, frame, growth, heavy, high, horizontal, industry, iron, material, occupation, office, planning, project, scaffolding, scene, site, sky, skyscraper, steel, structure, tall, technology, tower, urban, view, worker, working,