The walls of Copenhagen's newest concert hall, DR Byen by Jean Nouvel, boasts a quirky twist on the traditional polished concrete slab. Like Andrew Kudless's piece, this is another example of a hard material cast in a soft formwork -- this tactile wrinkled effect is created by casting the concrete in a plastic sheeting. Photo 5 of 9 in Mold It, Cast It by Tiffany Chu

Mold It, Cast It

5 of 9

The walls of Copenhagen's newest concert hall, DR Byen by Jean Nouvel, boasts a quirky twist on the traditional polished concrete slab. Like Andrew Kudless's piece, this is another example of a hard material cast in a soft formwork -- this tactile wrinkled effect is created by casting the concrete in a plastic sheeting.