The Nemours Mansion and Gardens is a 300-acre (1.2 km2) country estate with jardin à la française formal gardens and a classical French mansion located in Wilmington, Delaware. The mansion resembles a Château and contains more than seventy rooms spread over five floors occupying nearly 47,000 sq ft (4,400 m2). The estate is part of the DuPont legacy and is located on the DuPont Historic Corridor.
The mansion features rare French 18th century furniture throughout and contains an eclectic collection of notable antiques, works of art and tapestries. Artworks range from 16th century religious works to paintings by the European masters to early works by Americans Frederic Remington and Sidney Lawrence. Of particular interest is a rare Louis XVI musical clock, circa 1785, by David Roentgen and Peter Kinzing, which plays four different tunes on a dulcimer and pipe organ.