Ключевые слова: abstract, architecture, barcelona, block, building, building activity, building exterior, built structure, business, catalonia, cement, concrete, construction, construction equipment, construction frame, construction site, facade, fences, flat, grid, hoisting, housing project, industry, low angle view, no people, office, outdoors, protection, pulling, real estate, remodel, repairing, scaffold, security, sky, skyscraper, spain, stiff, tall, tower, urban scene,