The Lyndhurst Museum is located in Tarrytown, New York, within the historic Lyndhurst estate. This Gothic Revival mansion was designed by architect Alexander Jackson Davis and built in the 1830s. The museum showcases the rich history of the estate and its former residents, including Jay Gould, a prominent 19th-century financier. Visitors can explore the beautifully preserved rooms and learn about the architectural features of the mansion. The museum also offers guided tours, special exhibitions, and various events throughout the year, making it a popular destination for history enthusiasts and families alike.