A visitor touches names engraved on a traveling half-scale replica of the Vietnam Veterans Memorial in Washington, D.C. Bebeto Matthews/AP hide caption

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Not long after it was unveiled in 2011, controversy erupted over the Martin Luther King, Jr. Memorial. Critics argued that one of King's quotes had been paraphrased in a way that altered its meaning. In January, Interior Secretary Ken Salazar announced the mistake would be fixed. Karen Bleier/AFP/Getty Images hide caption

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Artist Christo finances his projects by selling design drawings like this one, a preparatory sketch for the Over the River project on Colorado's Arkansas River. Wolfgang Volz/Copyright Christo 2007 hide caption

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A model presents an outfit during the Marc Jacobs show Monday at Mercedes Benz Fashion Week in New York. Stan Honda/AFP/Getty Images hide caption

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Elizabeth Catlett's 1968 sculpture Homage to My Young Black Sisters Allison Keyes/NPR hide caption

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A Spring 2012 design by Phillip Lim. He will show his Fall 2012 collection during this year's Fashion Week in New York. Jason DeCrow/AP hide caption

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The original Mona Lisa is on permanent display at the the Musee du Louvre in Paris. Jean-Pierre Muller/Getty Images hide caption

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Oil painting by Marinus van Reymerswaele. Courtesy of Palazzo Strozzi hide caption

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