VALLETTA, MALTA - NOVEMBER 28: Queen Elizabeth II and Prince Philip, Duke of Edinburgh look at the view from the Kalkara heritage site in Valletta Harbour on November 28, 2015 in Valletta, Malta. Queen Elizabeth II, The Duke of Edinburgh, Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall are in Malta on the final day of a visit to the island that has been hosting the Commonwealth Heads of State Summit.  (Photo by John Stillwell - Pool/Getty Images)