Ключевые слова: abstract, architecture, art, background, blue, brick, building, business, city, concept, construction, design, equipment, exterior, facade, factory, frame, history, house, industrial, industry, interior, line, metal, modern, nobody, old, pattern, plant, power, red, safety, security, sign, sky, steel, stone, street, structure, symbol, technology, texture, travel, urban, wall, white, window, work,