Brizlee Hill, prior to the tower's erection, is reputed to have been the site of a fire-beacon used to warn of the approach of enemies. The tower is circular in plan, and has four slight rectangular projecting buttresses. An interior newel staircase is lit through windows. The tower is in an elaborate Gothic revival style, the design being variously attributed to Robert Adam or _his_ brother John (who were also employed on other works for the Duke including a remodelling of the interiors of Northumberland House and Syon House in London) and to the Duke himself. <sep>, Pronoun: his <sep>, A: John <sep>, B: Duke