Queen’s letter to Sydney residents locked in a vault 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 building, which was originally built in 1898 and is named after the queen’s great-great grandmother Victoria, is 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.

The contents of the queen’s letter is unclear, but it will likely thank Sydney residents for saving and refurbishing the historic building, after it was almost demolished to make way for a parking lot.

Back in 1986, a Malaysian company signed a 99-year lease on the building, taking their contract up to 2085 — the same year the queen’s correspondence is to be opened and made public.

The letter is currently stored inside a vault in a restricted dome area located at the top of the Queen Victoria Building.

Australia is a Commonwealth country, with Queen Elizabeth II serving as the country’s head of state for 70 years. She made 16 trips to Australia over the course of her reign, last visiting in 2011.

Queen Elizabeth II “died peacefully” at Balmoral Castle in Scotland on Thursday, following several months of health and mobility issues.

The monarch’s body will be flown from Scotland to London on Tuesday evening, before her funeral on Monday, September 19.

Her death has plunged Great Britain into a prolonged period of mourning, with hundreds of thousands of people paying tribute to Her Majesty in the British capital, leaving floral tributes outside the gates of Buckingham Palace.

The queen’s oldest son and heir — the new King Charles III — has already ascended the throne, although his official coronation ceremony will not take place for several months.