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
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