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 105 rooms spread over five floors occupying nearly 47,000 sq ft (4,400 m²). It shares the grounds with the Alfred I. duPont Hospital for Children and they are both owned by the Nemours Foundation at 1600 Rockland Road.