Pool Balls, 1977, Reinforced concrete, Three balls, each 11 ft. 6 in. (3.5 m) diameter, Aaseete

Pool Balls, 1977, Reinforced concrete, Three balls, each 11 ft. 6 in. (3.5 m) diameter, Aaseeterrassen, Münster, Germany, by Coosje van Bruggen and Claes Oldenburg