is a historic site in Tarry Town New York about 45 minutes outside New York City. The gothic mansion and its surrounding grounds where built in 1838 by Alexander Jackson Davis. The mansion passed through the hands of several families until the 1900s when it became the home of railroad magnate Jay Gould and his family.
In 1961 his daughter donated the mansion to the national historic trust preservation in her will. From that time the mansion and ground have been open to the public. You can tour the inside, but I never have, because the best thing about the Lyndhurst mansion is dogs are allowed on the grounds!