Twenty-four years ago, in 1993, the Queen opened the doors to Buckingham Palace for the first time, allowing the public to see inside her official London residence.
From the 21st July to the 30th September, the doors will open again, and visitors will be able to revel in the delights of the Palace including many of its works of art, collections and treasures.
Much of the Palace, including the Queen's private apartments, will remain closed to the public during the 10 weeks, so there'll be no chance of catching a glimpse of Her Majesty pottering about or enjoying a cup of tea, as she'll be at her Scottish residence, Balmoral.
So what can you expect to see if you decide to visit Buckingham Palace this year?
- Explore the lavishly furnished State Rooms, including the Throne Room, the State Dining Room, the Ballroom and the 155 ft long picture gallery; these hold some of the finest English and French furniture in the world.
- Marvel at paintings by Rembrandt, Rubens, Vermeer, Poussin, Canaletto and Claude; sculptures by Canova and Chantrey and exquisite examples of Sèvres porcelain.
- Venture out into the beautiful 16-hectare Palace gardens to admire the 150-metre herbaceous border, summer house, rose garden, enormous Waterloo Vase and the Palace tennis court.
- If the Throne Room isn't enough to tempt your visit, you'll also be able to look into the famous balcony where newly-wed Royals traditionally kiss.
- Every Monday, Wednesday, Friday and Sunday at 11am (weather permitting), watch the colourful Changing the Guard ceremony.
Every year, Buckingham Palace's summer opening features a special exhibition, which can only be seen for a limited time, and this year the Prince and Patron exhibition celebrates the 70th birthday of Charles, Prince of Wales, with a special display of handpicked artworks.
About 300,000 people visit the Palace every summer and although the original decision was to accept visitors until 1997, the Palace has continued to open its doors and it remains one of London's top tourist attractions.