View of Lancaster House, Stable Yard, Westminster, from the south-west corner, looking north. Designed in 1820 by Sir Robert Smirke for the Duke of York. Design completed by Benjamin Dean Wyatt and Philip Wyatt for the 2nd Duke of Sutherland in 1833-38 with added attic storey, and known as Stafford House. A staircase lantern was added by Charles Barry 1838. Classical mansion, two storey with attic and basements, dressed with giant Corinthian porticoes in Bath stone. It is Grade I listed, number 1236546. In 1877 it became the home of the Stafford House Committee for the Relief of Sick and Wounded Turkish Soldiers, to aid Ottoman refugees and wounded during the Russo-Turkish War. In 1912 the lease was purchased by the Lancastrian industrialist and philanthropist Sir William Lever, Viscount Leverhulme, who renamed it in honour of his native county of Lancashire and presented it to the nation the following year. It houses the government's wine cellars and was home to the London Museum until World War II. Now used for diplomatic receptions and related functions by the Foreign Office. The house has been extensively used as a filming location. In the background, Warwick House built 1770-71 by Sir William Chambers, and known as Errington House. Heightened and a canted bay was added to the south side in 1853 and the exterior was remodelled again in 1860. It is Grade II listed, number 1236545. In the early-nineteenth century it was the residence of Princess Charlotte of Wales the only child of George Prince of Wales, later George IV. She married Prince Leopold of Saxe-Coburg-Saalfeld, and died in childbirth at the age of 21 after giving birth to a stillborn son. The building is now offices.