I liked the lines the chains made, shot them at an angle to make the composition more dynamic. The background (sky through semi-transparent roof structure) was already very bright, so I decided to blow it out in an effort to simplify the image. Went for a hard, very high contrast look.
Post processing: RAW. Some minor spot editing. Black and white conversion, channel mixer with 50% red and 75% green. Curves to increase contrast.