I love the Park Avenue sculptures. I ran across Tom Friedman's "Looking Up, 2015" after dropping off my Brooklyn Half photos at New York Road Runner's offices on West 56th Street. Friedman works from "crushed aluminum foil roasting-pans to create figures, which, through a process of molding and lost wax casting, retain the original material's imprint and markings." The sculpture is at Park and 53rd Street and is on display through July 2016.
For more info, see http://www.luhringaugustine.com/news/tom-friedmans-looking-up-on-park-avenue