Longpont-sur-Orge is a commune in the Essonne department in Île-de-France in northern France. Inhabitants of Longpont-sur-Orge are known as Longipontains. From 1954 to 1962, the villa in Longpont-sur-Orge owned by William and Noma Copley served as a social hub and a central gathering place in the postwar era for a community of Surrealists to reunite after their dispersal during the war. Among the artists who frequented the villa located at 27, rue du Docteur Darier were Man Ray, Henri Matisse, Marcel Duchamp, Roland Penrose, Lee Miller, and British architect Maxwell Fry.