If you were a wealthy industrialist during the Gilded Age, you often demonstrated your success by building mansions. Nine members of the Vanderbilt family epitomized this trend by commissioning top architects to construct 25 homes between 1870 and 1920; many resembled palaces. This 54 room mansion along the Hudson River sits on a 200 acre estate in Hyde Park, New York, just a short distance from Franklin D, Roosevelt’s home. It was only used seasonally as a vacation home.