Buckingham Palace just might be the most famous building in the world. But its story is much less familiar. In this inviting BBC history documentary, Fiona Bruce reveals how England's most spectacular palace emerged from a swampy backwater. From the sewers of London to the magnificent State Rooms, the secrets of the Queen's official residence are shown. But where do camels and elephants fit in?

Windsor Castle is the world's oldest and largest inhabited castle, dating back to the 11th century. It's been a fortress, a home to medieval chivalry, a baroque palace, and finally one of the Queen's official residences. In this revealing BBC history documentary, Fiona Bruce travels from the bowels of the castle to the heights of the battlements. But why was the castle nearly destroyed in 1992?

Sitting in the shadow of the dramatic, dormant volcano Arthur's Seat, Edinburgh's Palace of Holyroodhouse is Britain's least well-known royal palace. But it might just be the most romantic. As Fiona Bruce discovers in this illuminating BBC history documentary, while it's one of the Queen's smallest palaces, it's helped to determine the fate of three countries: England, France and Scotland.