Close up of three concrete artworks with another cluster in the background.

Donald Judd, 15 untitled works in concrete, 1980-1984, detail. 2.5 x 2.5 x 5 meters. Permanent collection, the Chinati Foundation, Marfa, Texas. Photo by Douglas Tuck, 2009. Courtesy of the Chinati Foundation. Art © Judd Foundation. Licensed by VAGA, New York, NY