The stretch of Vermont Street between 20th Street and 22nd Street has many switchbacks, similar to the tourist attraction Lombard Street, known as "the most crooked street in the world." Vermont Street features a series of seven sharp turns, making it more crooked than better-known Lombard Street. (Vermont, while steeper than Lombard, has one less turn). Bottom of the Hill on 17th Street is a popular live music venue. Football star O.J. Simpson once lived in the public housing projects on the southeastern side of the hill. 18th Street runs through the heart of the north side of the hill and is home to three blocks that serve as the primary shopping and dining spot in the neighborhood. The powder blue water tower, located near 22nd Street and Wisconsin Street, was demolished in mid-2006 (as part of a seismic upgrade and due to the fact that it was no longer needed). The main campus of the California Culinary Academy is located at 350 Rhode Island Street. The facilities include professional kitchens, student-staffed restaurants, lecture classrooms, a library, and a culinary laboratory. At the foot of Potrero Hill is the Graduate School campus of the California College of the Arts and the CCA Wattis Institute for Contemporary Arts, located near the San Francisco campus in a new facility on Kansas St., a forum for leading-edge contemporary culture.