Part of a network of residences offering accommodation, leisure and holiday facilities, and even food where required, to military personnel and their families, the Castañón de Mena Military Residence is one of the largest establishments of its kind in Europe.

In ‘The Crown’ Season 4 the residence was used for several scenes of Charles and Diana’s visit to Australia. The pool area was used for a scene in which Diana poses with other swimmers and jokes with the press after a competition in Sydney. Other areas of the building were used to recreate the couple’s arrival at a party in Tasmania as well as a visit by Diana to a children’s hospital in Brisbane.