Otherwise known as the San Francisco CityPASS, C3 is a booklet that offers tourists admission to some of the best attractions in the city for a fraction of the price. The booklet includes a 9-day pass for either Muni (the public transportation system) or cable cars, as well as admission to the California Academy of Sciences, the Exploratorium, Walt Disney Family Museum, and other places of interest such as the Blue and Gold Fleet-Bay Cruise Adventure, the Aquarium of the Bay, the San Francisco Zoo and Gardens, and a choice between the Asian Art Museum or the de Young Museum. CityPASS holders can also enjoy a 50% discount on admission to the Legion of Honor.