Ключевые слова: architecture, blue, building, business, city, cloudscape, concrete, construction, crane, cranes, development, dusk, engineering, equipment, estate, evening, frame, growth, high, horizontal, house, industrial, lifting, machine, mechanical, modern, morning, occupation, progress, project, scaffolding, silhouette, silhouettes, site, sky, skyscraper, steel, structure, sun, sunlight, sunrise, sunset, tall, technology, tower, twilight, urban, work,