Admiralty House in London is a Grade I listed[2] building facing Whitehall, currently used for government functions and as ministerial flats.
The rear facade is of five bays and faces Horse Guards Parade, with a basement-level exit under the corner of the Old Admiralty Building.
[1] Admiralty House was designed by Samuel Pepys Cockerell, a protégé of Sir Robert Taylor, and opened in 1788.
[2] Built at the request of Admiral of the Fleet Viscount Howe, First Lord of the Admiralty, in 1782–1783 for "a few small rooms of my own", it was the official residence of First Lord of the Admiralty until 1964, and has also been home to several British prime ministers at times when 10 Downing Street was being renovated.
[3] Winston Churchill lived in the house while serving as First Lord of the Admiralty for two terms, 1911–1915 and 1939–1940.