Queen's 'secret' letter to Australia can’t be read for next 63 yrs I Here's why

A secret letter written by Queen Elizabeth II is locked inside a vault in Sydney, and the interesting this is, that it cannot be opened for 63 years. Currently, the letter is inside a vault in a historic building in Sydney and was written by the Queen in November 1986 and is addressed to the people of Sydney. Watch this video to know more.