Ключевые слова: architecture, area, background, berlin, blue, building industry, business, city, clean, clear sky, cloudless, concept, connection, construction, construction equipment, construction site, equipment, factory, industrial, industrial equipment, industry, infrastructure, iron, lamp, lines, media supply, metal, minimal, minimalism, no people, object, pipe, pipeline, plumbing, service, site, sky, steel, street lamp, street light, supply, system, transport, transportation, tube, tubing, urban, valve, water, water supply,