Windsor Castle's East Terrace Garden, where the Queen grew vegetables to help the war effort, will open to the public this weekend for the first time in decades.
The formal gardens, which were created by George IV in the 1820s, will welcome visitors who want to view the open space's manicured lawns, colourful flowerbeds and sculptured topiary.
During the Second World War the gardens were dug up to grow produce and the Queen, then Princess Elizabeth, and her sister Princess Margaret were each assigned a small site to cultivate tomatoes, sweetcorn and dwarf beans.
Richard Williams, Windsor Castle's learning curator said about the gardens: "Well, it's been a great favourite for members of the royal family for just coming up to 200 years which is when it was first laid out by George IV."
Mr Williams told BBC Breakfast: "Queen Victoria had a great affection for it because her husband Prince Albert took part in laying out the design for it.
"And it also has a significance for Her Majesty the Queen, because during the war years the whole garden was dug up in order to grow vegetables, and the then young Princess Elizabeth and Princess Margaret had their own individual plots to grow vegetables for the war effort.
"And I suppose the other significance for the Queen is that in 1971 it was the Duke of Edinburgh who effectively designed the garden as we see it today, with the flower beds and the beautiful fountain at the centre."