The Marden House is a residence in McLean, Virginia, United States, designed by the American architect Frank Lloyd Wright. It is located just off Chain Bridge Road and overlooks the Potomac River. Also known as "Fontinalis", it is named after Luis Marden (1913–2003), a writer, photographer and explorer for National Geographic. It was designed by Wright in 1952 and was completed in 1959 at a cost of $76,000.