Queen Elizabeth II Left a ’Secret’ Letter that Will; stay Unopened Until 2085.

Queen Elizabeth II penned a top-secret letter to residents of Sydney, Australia — and it won’t be opened until the year 2085.

The monarch, who died last Thursday at the age of 96, 

Composed the correspondence back in 1986 to celebrate the restoration of the city’s Queen Victoria Building that same year.

The edifice, which was originally built in 1898 and is named after the queen’s great-great grandmother Victoria,

one of Sydney’s most famous structures, located in the heart of the city’s downtown.

The sealed letter is accompanied by instructions for Sydney’s lord mayor.

“On a suitable day to be selected by you in the year 2085 AD, would you please open this envelope and convey to the citizens of Sydney my message to them,” Elizabeth II wrote