Question: are there any castles in usa?
Answer: Bettendorf Castle, also known as Vianden Castle, Fox River Grove, Illinois, built in 1931–32. Biltmore Estate, Asheville, North Carolina, 175,000-square-foot (16,300 m2) Châteauesque style mansion built 1889–95 for George Washington Vanderbilt II. It is the largest privately held home in the United States.