Kate begins with Buckingham Palace, which the brainchild of George IV, who hired architect John Nash to turn modest Buckingham House into a palace on a grand European scale.
An unveiling of some of the many secrets, dilemmas and disasters held by Windsor Castle, including revisiting the statues of Princess Diana.
Part medieval fortress, part French chateau, Balmoral is not to everyone's taste but it provides a retreat from prying eyes for the Royals.
Sandringham in Norfolk was purchased in 1861 for the rakish Prince Edward, to curb his ways, but it proved to be the perfect palace for a party.
