The art of Christo and Jeanne-Claude

A bicyclist rides through Christo and Jeanne-Claude's The Gates at New York's Central Park in 2005 Photograph: Andrew Gombert /EPA

Christo and his wife Jeanne-Claude stand in front of a model of their work titled Wrapped Reichstag at the Wuerth Museum in La Rioja, Spain Photograph: Raquel Manzanares/EPA

Christo and Jeanne-Claude at the opening of The Gates in 2005 Photograph: Richard Drew/AP

Christo and Jeanne-Claude at their exhibition titled Over the River, A Work in Progress at Fondation de l'Hermitage in Lausanne, Switzerland Photograph: Dominic Favre/AP

Central Park visitors walk through The Gates Photograph: EPA

Christo and Jeanne-Claude stand in front of The Umbrellas in 2004 as they visit an exhibit of their work at Centre PasquArt in Biel, Switzerland Photograph: Monika Flueckiger/AP