It may have been a defensive site even in Roman times and Corfe Castle certainly has had a colourful history. The first castle buildings would have been built of wood. In 979 King Edward was reputedly murdered by his step-mother so that her own son Ethelred the Unready could become King of England. In the latter half of the 11th Century the Castle was rebuilt in stone by William the Conqueror and for the next six hundred years was a royal fortress used by the monarchs of England and latterly their constables.
By 1572 warfare had changed and Corfe Castle was sold by Queen Elizabeth I to Sir Christopher Hatton, her dancing master and favourite. In 1635 the Castle was bought by Sir John Bankes, who was Lord Chief Justice, as an occasional private residence.
The dramatic ruins of Corfe Castle stand on a natural hill guarding the principal route through the Purbeck Hills. As you can see it guards the gap between the south of Purbeck, where Purbeck marble was once quarried, and the rest of England. Nothing could pass in or out without going past the Castle.