Just east of the zoo entrance, these antiquated enticements never fail to delight the preteen set. The open-air railroad takes a 3-minute journey through a grove of eucalyptus trees, while the charming carousel is one of the last in the world to still offer a ring grab (free ride if you seize the brass one). The carousel, built in 1910, is a classic, with hand-carved wood frogs, horses, and pigs.