5. Woodhull Medical Center, Brooklyn

Keith Haring mural at Woodhull Hospital

Haring created this 700 foot-long mural over the course of a week in 1986. It was a personal gift to the hospital, which Haring admired for its dedication to pediatric AIDS research and treatment. Haring camped out at the Bed-Stuy hospital, and during breaks he signed autographs and did little drawings on t-shirts and poster boards for anyone who asked. The brightly colored, exuberant figures shepherd patients through the main lobby and down two corridors.