View the online exhibition and more at http://www.guggenheim.org/leeufan Lee Ufan installing Relatum (Formerly Phenomena and Perception B, 1968/2011) in preparation for Lee Ufan: Marking Infinity, on view at the Solomon R. Guggenheim Museum, New York, June 24-September 28, 2011. Edited by Veena Rao Photographed by Eric Munari © 2011 Solomon R.