Ключевые слова: abstract, architecture, background, block, brick, building, cement, city, closeup, cobble, cobblestone, concrete, construction, floor, gray, grey, industrial, industry, manufacturing, many, material, materials, natural, new, outdoor, pallet, pattern, pave, pavement, paving, pile, repair, road, rock, rough, sidewalk, site, slabs, square, stack, stacked, stone, stones, street, structure, surface, texture, tile, urban, walkway,