portuguese pavement known as calçada portuguesa made of small white-red-black stones in mosaic pattern with stop sign

portugal alley ancient arrangement art craft artistic black cobbled cobblestone construction cube decoration flat flooring geometric motif handicraft historic centre interstice lagos mall mosaic orange pattern pedestrian piece portuguese pavement red rua sidewalk small square stone street strolling tessellation tile tourism touristic spot traditionalstyle vernacular walking walkway white yellowish calã§ada portuguesa white-red-black stones stop sign sign vertical