Photo: Typewriter Eraser, Scale X by Oldenburg and van Bruggen

This amusing 19 foot sculpture by the team of Claes Oldenburg and Coosje van Bruggen is stainless steel and resin painted with acrylic urethane. Children guess that it is a pizza cutter, a guitar, or a hairy unicycle, since familiarity with these erasers has diminished with the waning popularity of typewriters in the computer age.