The childhood home of Queen Elizabeth, the Queen Mother, and playground for her daughter Elizabeth, the future queen, is one of the oldest royal residences in Britain. This pink-painted fairy-tale fortress has been the family home to the Lyons, one of Britain's oldest aristocratic families. Experts including Paul Burrell and Laurence Llewelyn-Bowen reveal the secrets of a house that helped shape the world views and personal convictions of Elizabeth II and her mother.

• Documentary