Whitemarsh Hall - Credit: Wikimedia Commons
Whitemarsh Hall was a large estate located on of land in Wyndmoor, Pennsylvania, United States, and owned by banking executive Edward T. Stotesbury and his wife, Eva.James T. Maher, The Twilight of Splendor: Chronicles of the Age of American Palaces (Boston/Toronto: Little, Brown) 1975:1-88. Designed by the Gilded Age architect Horace Trumbauer, it was built in 1921 and demolished in 1980. Before its destruction, the mansion was the third largest private residence in the United States. Today, it is regarded as one of the great losses in American architectural history. Read more on Wikipedia
Source: en.wikipedia.org