Dunham Massey Hall, usually known simply as Dunham Massey, is an English country house in the parish of Dunham Massey in the district of Trafford, near Altrincham, Greater Manchester. It is now a National Trust property, open to the public. During World War I it was the Stamford Military Hospital,The stately home was designated a Grade One listed-building on 5 March 1959.