Buckingham Palace was first used for the State Opening of Parliament by George III in 1762 and has been used by the monarch for every coronation since George IV. It was last used for the Golden Jubilee of Elizabeth II. Also housed in the mews are the coach horses used at royal ceremonial processions. The Mall, a ceremonial approach route to the palace, was designed by Sir Aston Webb and completed in 1911 as part of a grand memorial to Queen Victoria. It extends from Admiralty Arch, across St James's Park to the Victoria Memorial. This route is used by the cavalcades
Garden at Buckingham Palace south-west and the Royal Mews, Queen's Gallery, and Buckingham Palace to the south and east. The planting is varied and exotic, with a mulberry tree dating back to the time of James I of England. Notable features include a large 19th-century lake which was once recently graced by a flock of flamingoes, and the Waterloo Vase. In the garden there is a summerhouse, a helicopter pad, and a tennis court. Unlike the nearby Royal Parks of London, Buckingham Palace Garden is not usually open to the public. However, when Buckingham Palace is open during August and September, visitors have access