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, fence, flat, grid, hoisting, industry, low angle view, no people, office, outdoors, protection, pulling, real estate, remodel, repairing, scaffold, security, sky, skyscraper, spain, stiff, tall, tower, urban scene,