Philadelphia Museum of Art
2013 Exhibitions: Dancing around the Bride: Cage, Cunningham, Johns, Rauschenberg, and Duchamp (October 30 - January 21), Sol LeWitt: Lines in Four Directions in Flowers (May 12 - TBA), Cy Twombly: Sculptures (April 14 - March)
A strong supporter of local artists, the Philadelphia Museum of Art is also home to the world's most important collection of works by Marcel Duchamp. Don't miss seeing the famed Nude Descending a Staircase canvas and don't mistake the Fountain sculpture for the real thing. If you visit on a Friday evening, be sure to catch one of their "Art after 5" events, which have featured performers ranging from jazz musicians to drag queens.