Ключевые слова: abstract, angle, arch, architectural, architecture, beam, blue, bolt, bridge, building, closeup, construction, contemporary, cross, design, detail, dirty, engineering, exterior, frame, geometric, girder, gray, heavy, high, industrial, industry, infrastructure, iron, lattice, link, metal, nobody, old, outdoors, part, pattern, rivet, rusty, shape, sky, steel, strength, strong, structure, support, transportation, truss, urban,