Behind the scenes of the royal residence which is currently home to the Duke and Duchess of Cambridge and Prince Harry, was the birthplace of Queen Victoria and housed a P.O.W. Camp and artillery battery in WWII.

We go inside Westminster Abbey. For nearly a thousand years, it's been the stage on which our greatest national ceremonies are played out, from the Queen's Coronation to the wedding of Kate and William. But it is also where the nation mourns its dead, from the Queen Mother to the tomb of The Unknown Warrior.

We go inside HMP Manchester, otherwise known as Strangeways. For nearly 150 years this notorious prison has held some of our most dangerous and notorious criminals from one-eyed cop killer, Dale Cregan to 'Doctor Death' Harold Shipman, Britain's most prolific serial killer.

Within the Palace of Westminster are a network of secret rooms and hidden worlds at the heart of the British State. The corridors of power have seen famous leaders and scandal but time is taking its toll on the structure.