Jan Dibbets, The Shortest Day of 1970 Photographed in My House Every 6 Minutes from Sunrise til Sunset, 1970. Gelatin silver prints on aluminum panels, 12,7 x 1416,1 cm, each panel 12,7 x 141,6 cm. Hirshhorn Museum and Sculpture Garden, Smithsonian Institution, Washington, DC, Joseph H. Hirshhorn Purchase Fund, 2007, The Panza Collection. Installation view Perceptiones en trasformación. La collección Panza del Museo Guggenheim, Guggenheim Museum, Bilbao, November 16, 2000 - February 14, 2001. Photo Erika Barahona Ede © FMGB Guggenheim Bilbao