Ключевые слова: abstract, architecture, backdrop, background, block, brick, brick pattern, cement, city sidewalk, concrete, concrete tiles, construction, design, direction, exterior, floor, footpath, granite, gray, ground, grunge, historic, masonry, material, outdoor, pattern, pavement, pavement background, paving, pedestrian, red, retro, road, rock, rough, sidewalk, square, stone, stonewall, street, structure, surface, texture, textured, tile, town, urban, walkway, wall,