North elevation of the Treasury Building, Horse Guards Parade, City of Westminster. The Treasury Buildings include the Privy Council Office and Cabinet Office. It incorporates the remains of Henry VIII's Whitehall Palace, Dorset House 1700-10, William Kent's Treasury 1733-36, Privy Council and Cabinet Offices 1824-27 by Sir John Soane, remodelled and altered as the Treasury 1845-47 by Sir Charles Barry. All are in use as government offices and it is Grade I listed, number 1267063. The northern elevation, overlooking Horse Guards Parade, is fronted in Portland stone. The facade is divided into three horizontal and three vertical stages, the latter effect being obtained by advancing the centre. The upper stage of the central portion has Ionic Columns on pedestals supporting an entablature and a pediment containing a cartouche bearing the Royal Arms, with festoons of leafage and cornucopia of fruit carved in relief. The entablature, which continues across the whole front, consists of a modillion cornice, a pulvinated frieze with carved oak leafage and crossed ribands, and a moulded architrave. The frieze to the central portion is interspaced with carved lions' heads. The middle stage frieze has medallions representing the royal crown, the initials "G.R." and the badge of the Order of the Garter. Below the windowsills are panels with symmetrical balusters. In the centre a passageway leads into Downing Street. In 1904 the Prime Minister was Conservative Arthur Balfour.