The Getty Museum is the last€” and only U.S. stop on the world tour of Woman in Blue Reading a Letter. Rijksmuseum, Amsterdam. On loan from the City of Amsterdam (A. van der Hoop Bequest)/Courtesy of the J. Paul Getty Trust hide caption

itoggle caption Rijksmuseum, Amsterdam. On loan from the City of Amsterdam (A. van der Hoop Bequest)/Courtesy of the J. Paul Getty Trust

A split image shows Allen Ginsberg in 1953 and 1967. Allen Ginsberg LLC/Corbis | The National Portrait Gallery hide caption

itoggle caption Allen Ginsberg LLC/Corbis | The National Portrait Gallery

Marcel Duchamp's Cubist-inspired Nude Descending a Staircase was famously described by one critic as "an explosion in a shingle factory." Philadelphia Museum of Art/Copyright succession Marcel Duchamp / ADAGP, Paris / Artists Rights Society (ARS), New York 2013 hide caption

itoggle caption Philadelphia Museum of Art/Copyright succession Marcel Duchamp / ADAGP, Paris / Artists Rights Society (ARS), New York 2013

Very little is known about Girl With a Pearl Earring, which is often referred to as the Dutch Mona Lisa. Superstock/The Art Archive hide caption

itoggle caption Superstock/The Art Archive

Grapes, a spiky cluster of wooden stools from the Qing Dynasty (1644-1911), is part of Ai Weiwei's repurposed furniture series. Cathy Carver/Courtesy Hirshhorn Museum hide caption

itoggle caption Cathy Carver/Courtesy Hirshhorn Museum