This full-day tour takes you to Windsor Castle, which has served as a royal residence for over 900 years. It is the largest inhabited castle in the world and still used by the Royal Family today. You will also visit Stonehenge, a mysterious and awe-inspiring monument that has puzzled historians for centuries. The standing stones arranged in a circular formation are believed to be over 4,000 years old, and their purpose is still a matter of debate.