This part of the Palace, the Queen's suite of apartments on the east side overlooking the park, was built by Christopher Wren for Mary II, but was uncompleted at her death in 1694. Originally it was called the Long Gallery but by the early nineteenth century it was known as the Ballroom or Tapestry Gallery on account of the set of Le Brun tapestries showing episodes from the story of Alexander the Great, which had been acquired by George I. The beautiful marble chimneypiece with a bust of Venus flanked by two cupids was carved by John Nost for the King's Bedchamber in 1700 and transferred soon after. For the view painted by George Cattermole (Pyne's Royal Residences, 1819) the room was furnished with a magnificent suite of carved and gilded seats, tables and candelabra, with immense Oriental porcelain bowls on stands, whereas this watercolour shows a much more sparse arrangement with a Dutch tulipière, presumably from the time of William III.

The enfilade of rooms visible through the door continues the Queen's suite with Queen Anne's Bedroom, the Queen's Drawing Room and Audience Chamber at the end