Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
General view of atmosphere at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Interior Secretary and Coloradan Ken Salazar speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
A general view of atmosphere at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo, National Art Gallery Curator Molly Donovan, Interior Secretary Ken Salazar and Earl A. Powell, Director of National Art Gallery attend a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Christo speaks at a news conference about his works at the National Gallery of Art on Nov. 8, 2011, in Washington, D.C. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks with Earl A. Powell, Director of National Art Gallery at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks with Earl A. Powell, Director of National Art Gallery at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks with Earl A. Powell, Director of National Art Gallery at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
Christo's 'Over The River' Colorado Project Preparatory Collages Unveiled
Artist Christo speaks at a press conference unveiling two original preparatory collages for 'Over The River' donated to the National Galley of Art's permanent collection by French environment artist Christo at the National Gallery of Art on November 8, 2011 in Washington, DC. (Photo by Riccardo S. Savi/Getty Images)
