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 were invited to apply for tickets to Party at the Palace where the guitarist Brian May of the band Queen performed his "God Save the Queen" guitar solo on top of Buckingham Palace. This concert was preceded the previous evening by a Prom at the Palace. During the Queen's 80th birthday celebrations in 2006 the garden was the scene of Children's Party at the Palace for an audience of 2,000 children. The gardens are Grade II* listed on the Register of Historic Parks and Gardens. The landscape design was by Capability Brown but the garden was redesigned at the time