Lynnewood Hall is a 110-room Neoclassical Revival mansion in Elkins Park, Montgomery County, Pennsylvania, designed by architect Horace Trumbauer for industrialist Peter A. B. Widener between 1897 and 1900. Considered the largest surviving Gilded Age mansion in the Philadelphia area, it housed one of the most important Gilded Age private art collections of European masterpieces and decorative arts assembled by Widener and his younger son Joseph. Exterior Side View
Ward Hall, Georgetown, Kentucky History from Wikipedia: Ward Hall is a Greek Revival antebellum plantation mansion located in Georgetown, Kentucky. The 12,000-square-foot (1,100 m2), with 27-foot (8.2 m) high Corinthian fluted columns, is a Greek Revival house in Kentucky, and one of the finest examples of a mid-nineteenth classical building in the United States.