from the OSM Forum: Hi, does anyone know what this structures are (and how to tag them)? bing-tiles: http://ecn.t3.tiles.virtualearth.net/tiles/a0333211232223333112?g=737&n=z http://ecn.t3.tiles.virtualearth.net/tiles/a0333213010010210321?g=737&n=z Thanks... Best regards LordOfMaps