Ключевые слова: abstract, architecture, background, block, brick, cobble, cobblestone, colored, concrete, construction, dark, floor, footpath, geometric, granite, gray, ground, masonry, material, mosaic, multicolored, objects, pattern, paved, pavement, paving, rectangular, road, rock, rough, sandstone, sidewalk, square, stone, street, surface, texture, textured, tile, urban,