Ключевые слова: architecture, background, ballast, block, breakstone, brick, building, bulk, cement, city, cobalt stone, cobble, cobblestone, concrete, construction, depot, eco, footpath, granite, gravel, hard, heap, hill, industrial, laying, macadam, material, natural, old, outdoor, paved, pavement, paving, paving stones, pile, road, road construction, rock, rough, rubble, scree, sidewalk, site, solid, stack, stone, stones, street, walkway, warehouse,