Christo, The Mastaba (Project for London, Hyde Park, Serpentine Lake), Graphite, charcoal, wax crayon, enamel paint, hand-drawn city map and technical drawings, hand-drawn color chart on Mylar, and kraft paper, on paper, 38.1 x 243.8 cm and 106.7 x 243.8 cm (15 x 96 in and 42 x 96 in). Photo: André Grossmann © 2018 Christo and Jeanne-Claude Foundation