Petworth House

Late 17th-century mansion in West Sussex, England, 21 km/13 mi northeast of Chichester. It was rebuilt 1688–96 by the 6th Duke of Somerset. The west front of the house is 98 m/321 ft long. In 1947 the 3rd Lord Leconfield gave the house and 300 ha/740 acres of park to the National Trust.

Much of the furniture and contents of the house was lent to the Trust by the Treasury, including many paintings by J M W Turner, who was a friend of the 3rd Lord Egremont and often stayed at Petworth. There are also paintings here by Van Dyck, Claude, and Poussin, a large collection of antique and 18th-century sculpture, and a room carved by Grinling Gibbons.