The Vanderbilt Mansion National Historic Site is a historic house museum in Hyde Park, New York. It became a National Historic Landmark and started operation under the National Park Service in 1940. The mansion, known as Hyde Park, was the Gilded Age home of Frederick William Vanderbilt and his family from 1895 to 1938.
The 54-room Vanderbilt mansion was designed by the architectural firm McKim, Mead & White. Designed and built between 1896 and 1899, the house is an example of the Beaux-Arts architecture style. The interior of the mansion is an archetype of the American Renaissance, incorporating European antiques and intricate period reproductions. The site includes 211acre of the original larger property, including lawns against the Hudson River, formal gardens, woodlands, and auxiliary buildings. The grounds also include Italian gardens that were restored by the volunteer Frederick W. Vanderbilt Garden Association.