Central Park in New York City, USA spans 341 hectares (843 acres), which is 6% of the island of Manhattan. One of the most influential innovations in the park's design was its “separate circulation systems” for pedestrians, cyclists, horse riders, and cars. The park contains numerous tennis courts and baseball fields, an ice-skating rink, and a swimming pool. It also serves as the finish line for the New York City Marathon and New York City Triathlon.