Christo, The Floating Piers (Project for Lake Iseo, Italy), collage in two parts, 2014; 12 x 30 1/2 inches and 26 1/4 x 30 1/2 inches; pencil, charcoal, pastel, wax crayon, fabric, enamel paint, cut-out photographs by Wolfgang Volz, and map; photo by André Grossmann, © 2014 Christo; Ref. AUR # 5-2014