Investiture II or another member of the royal family each year. A list of those to be honoured is published twice a year, in either the New Year Honours or the Birthday Honours. Approximately 25 investitures are held annually: most in the Ballroom at Buckingham Palace, although the Waterloo Chamber in Windsor Castle and the Palace of Holyroodhouse in Edinburgh, Scotland, are also used. In 2014 The Prince of Wales held an investiture at Hillsborough Castle in Northern Ireland. Investitures are also held in other Commonwealth realms, when the Governor-General acts on behalf of the Queen. The poem "The Investiture" by
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