Ключевые слова: abstract, architecture, background, cap, circle, circular, city, closed, cobblestone, construction, cover, design, detail, dirty, drain, drainage, floor, gray, grunge, hatch, heavy, hole, industry, infrastructure, iron, lid, manhole, material, metal, old, pattern, pavement, paving, road, rough, round, rusty, sewage, sewer, sewerage, sidewalk, steel, stone, street, surface, texture, tile, underground, urban, water,