These two are obvious favourites. I selected a metal beam that had been burned and scorched several years ago when the place caught on fire. The texture, colour and curling paint caught my eye. The first one is from a 3 inch strip of metal on the edge of the I beam - the second shot is from the flat area.
13 ) 60mm : f5.6 @ 1/80'th
14 ) 60mm : f5.6 @ 1/60'th