The Queen's Sandringham Estate is introducing parking charges following an increase in visitor numbers.
Charges will begin in February 2020, with proceeds used to help with the "increasing cost of maintaining existing facilities" and to fund future developments to "improve the visitor experience", a spokesman said.
Improvements are set to be made to the on-site cafe, gift shop and visitor centre at Sandringham, which is around seven miles from King's Lynn, Norfolk.
A spokesman said: "In recent years, the number of people and vehicles to the estate has increased significantly, particularly in the country park, which received over 500,000 visitors last year.
"In light of the increase in numbers, the estate is undergoing some redevelopments with a view to offering improved facilities for visitors, while also maintaining the landscape and environment for all to enjoy."
In 1862, Sandringham House with its estate was bought as a country home for Albert Edward, Prince of Wales, who had just turned 21.
The gardens at Sandringham were first opened to the public by King Edward VII in 1908, and the Queen opened the house itself to the public in her Silver Jubilee year, 1977.
The basic parking charge will be £3 for up to two hours, with stays of up to 20 minutes free and season tickets available.
The charges will not apply on Christmas Day when thousands of people visit to see the Royal Family going to church.
