[RSmithOpt]

The Biltmore House is a French Renaissance-style mansion near Asheville, North Carolina, built by George Washington Vanderbilt II between 1896 and 1902. It is the largest privately owned home in the United States, at 175,000 square feet. Still owned by the family, it is operated as a museum.

Vanderbilt paid little attention to the family business or his own investments, and the construction and upkeep of Biltmore depleted much of his inheritance. After Vanderbilt died of complications from an appendectomy in 1914, his widow sold much of the original 125,000 acres (506 km²) to the federal government to become Pisgah National Forest. The estate includes approximately 8,000 acres today and is split in half by the French Broad River. It is owned today by The Biltmore Company, which is controlled by Vanderbilt's grandson, William A.V. Cecil. In 1963, it was designated a National Historic Landmark.

[Liz]

Interesting---thanks----I believe at the time it was supposed to be the largest private home in America.

[Aquinasfan]

It is the largest privately owned home in the United States, at 175,000 square feet.

When 100,000 square feet just isn't enough.