On the Market Since: 1987
Total Area: 484,000 square feet
Initial Value: $65 million*

After passing through the British royal family’s hands for generations, Queen Elizabeth II surprised her spectators when she announced in 1977 that the grounds of her beloved country home would be opening to the public for the first time in history. While it remains one of her private homes to this day, its registration as a historic locale suggests that its ownership may be seeking other hands. 

This incredible, sprawling estate was erected in 1870. Most famously of all (and perhaps key to the Queen’s personal devotion to the land), this is the site where both George V and George VI passed away. Its roots in English history cannot be understated, nor its true value defined in dollars.