Knollwood is a once-in-a-century opportunity to own one of America’s most storied private estates—a living chapter of U.S. history. Built in 1900 by Franklin MacVeagh, U.S. Secretary of the Treasury, and later acquired by Ernest Henderson, founder of Sheraton Hotels, Knollwood has had only two owners in its 124-year history. Listed on the U.S. National Register of Historic Places, Knollwood is more than a residence- it is a cultural landmark, a legacy property and an irreplaceable piece of American heritage.