

You decide. Which one is your favorite? Leave your answer in a comment below...
Gerhard Richter's drawings...
Tony Smith's sculptures...
Fred Sandback's sculptures...
Marcel Duchamp's door
And Steven Holl's addition to the Nelson-Atkins Museum of Art in Kansas City
Hand-made rings made from concrete and stainless steel by 22 Design Studio, Taiwan. Being sold through the DesignBoom Shop.