Mary Kisler: Wrap artists Christo and Jeanne-Claude

In 1995 Christo and Jeanne-Claude’s Wrapped Reichstag covered the German parliament building in Berlin in aluminium fabric. Photograph: Wolfgang Volz

Gabrovo, 1949 Christo (left) during a drawing lesson Photo: Archive © 1949 Christo

New York City, 1976 Christo and Jeanne-Claude in Christo’s studio Photo: Fred W. McDarrah/Getty images © 1976 Christo

Christo Running Fence (Project for Sonoma County and Marin County, State of California) Drawing 1975 Pencil, charcoal and ball-point pen 28 x 22" (71 x 56 cm) Photo: Wolfgang Volz © 1975 Christo

Christo and Jeanne-Claude Running Fence, Sonoma and Marin Counties, California, 1972-76 Photo: Wolfgang Volz © 1976 Christo

The artists wrapped the Pont Neuf bridge across the Seine in Paris in 1985. Photograph: Eye Ubiquitous/Alamy Stock Photo

Christo The Thousand Gates (Project) Drawing 1979 Pencil, charcoal, pastel and tape 11 x 14" (28 x 35.5 cm) Photo: Eeva-Inkeri © 1979 Christo

Christo and Jeanne-Claude The Gates, Central Park, New York City, 1979-2005 Photo: Wolfgang Volz © 2005 Christo and Jeanne-Claude

Christo and Jeanne-Claude The Floating Piers, Lake Iseo, Italy, 2014-16 Photo: Wolfgang Volz © 2016 Christo