Westchester County, a collection of towns that serve as a popular suburb for the bordering New York City, is also the gateway to the Hudson River Valley, an area that promises a plethora of outdoor activities, from sailing to bird-watching to cross country skiing. The County also contains Rye Playland, a popular children's amusement park, historic sites from the American Revolution, the African American Heritage Trail and several famous houses, including Lyndhurst, a Gothic Revival mansion.