 Brougham Castle survives essentially as it was when the main repairs were finished in the 1930s . The castle is a Scheduled Monument , meaning it is a " nationally important " historic building and archaeological site which has been given protection against unauthorised change . Until 1984 , when a survey of the standing structure was conducted , little archaeological investigation had taken place at Brougham Castle . The survey was part of a monograph on the castle detailing its history and the phasing of the structure . Brougham is one of only a few castles in Cumbria to have undergone extensive archaeological investigation . Today , the castle is open to the public , and a museum is run by English Heritage , the successor of the Office of Works . 
