Queen Victoria replaced him. Salisbury remained prime minister for the remainder of Victoria's reign. On 23 September 1896, Victoria surpassed her grandfather George III as the longest-reigning monarch in British history. The Queen requested that any special celebrations be delayed until 1897, to coincide with her Diamond Jubilee, which was made a festival of the British Empire at the suggestion of the Colonial Secretary, Joseph Chamberlain. The prime ministers of all the self-governing Dominions were invited to London for the festivities. One reason for including the prime ministers of the Dominions and excluding foreign heads of state was to avoid having to
Diamond Jubilee of Elizabeth II Government House on Canada Day and, in the Northwest Territories, the Canada Day parade was themed to celebrate the jubilee and numerous jubilee medal presentation ceremonies took place. Also on 1 July, the Canadian Museum of Civilization opened the exhibit "A Queen and Her Country", showing artefacts from the Crown Collection relating to Queen Elizabeth II and her role as Queen of Canada, including the Queen's Beasts from her coronation. At Rideau Hall on 11 September, a reception, attended by the Governor General; his wife; Prince Edward, Earl of Wessex; Sophie, Countess of Wessex; and others, was held for the