The Vanderbilt Mansion opened to the public in 1940, according to the National Park Service. I bought my tour ticket at the Pavilion Visitor Center, which once served as a guest house. The only ...

The Vanderbilt Mansion in Hyde Park, New York, was built by Frederick Vanderbilt in the 1890s. The 45,000-square-foot Gilded Age mansion is located on 153 acres of land in the Hudson Valley ... which ...