One of the largest urban parks in the United States. At 1,371 acres, it is approximately 500 acres larger than Central Park in New York City. In 1904, the Louisiana Purchase Exposition, the greatest of the World's Fairs, drew more than 19 million visitors from around the world. Home to the Art Museum, Science Center, Zoo, Jewel Box greenhouse, History Museum, The Muny theatre, 7.5-mile biking, jogging and skating path, skating rink and lakes. FREE