The well-known architectural firm of McKim, Mead, and White was responsible for the beaux arts style of this grand 65-room mansion fronted with mammoth columns. Formerly known as Mills Mansion, the Hudson River estate was a family home of financier Ogden Mills and his wife, Ruth Livingston Mills, in the late 1800s to early 1900s. You may see the mansion's lavish interior by guided tour only. The estate, one of the most beautiful properties in the Hudson Valley, has hiking
and cross-country-skiing trails, and a huge hill for sledding in winter.
Old Post Rd., off U.S. 9, Staatsburg, New York, 12580, United States