Richard Serra 

Clara Clara

, 1983

Two identical conical sections inverted relative to each other 
One: 12 ft. (3.7 m) high x 109 ft. (33.2 m) along the chord x 2 inches (5.1 cm) thick 
One: 12 ft. (3.7 m) high x 107 ft. 10 inches (32.8 m) along the chord x 2 inches (5.1 cm) thick

Installation view, Place de la Concorde, Paris, as part of the exhibition Richard Serra, Centre Georges Pompidou, Paris, 1983-1984

Photo by Dirk Reinartz 
© 2019 Richard Serra/Artists Rights Society (ARS), New York