Queen Elizabeth II's secret letter to Australia locked in vault, can't be opened for 63 years

Do You Know? A letter written by Queen Elizabeth II can’t be opened for 63 years. A secret letter was written by Queen Elizabeth II. The letter is locked inside a vault in Sydney. It cannot be opened for 63 years. The letter was written by her in November 1986. The letter is hidden inside a glass case in a secure location. It can't be opened until 2085. As head of state, Queen Elizabeth II visited Australia 16 times (ANI)