 In 1915 , the Ancient Monuments Board declared Brougham Castle a monument " whose preservation was regarded as being of national importance " . With the introduction of bus services in the area , the castle experienced renewed interest from the public , and in the late 1920s around 2 @,@ 000 people visited annually . In 1927 , the 2nd Baron Hothfield granted guardianship of Brougham Castle to the Office of Works , although he retained ownership . The organisation repaired the castle at the cost of £ 5 @,@ 925 . In the 1930s an additional £ 1 @,@ 050 was spent removing the masonry added in the 1840s . 
