Don't miss the annual Museum Mile Festival, which offers free access to eight museums along Fifth Avenue during extended evening hours. Participating institutions include El Museo del Barrio, the Solomon R. Guggenheim Museum and the Museum of the City of New York. Visitors will be delighted not only by the art inside but by the outdoor festivities as well: enjoy face painting, live music and a whole lot of block party–style cultural happenings. The event, which spans 23 city blocks, kicks off at 5:45pm. For more information, visit museummilefestival.org.