Windsor Castle (optional entry) is the ancestral home of the British monarchy and the largest occupied castle in the world. As you walk around the impressive grounds, it is almost hard to believe that successive kings and queens have been living here for over 900 years. You'll see why this beautiful castle was a favoured weekend residence of Queen Elizabeth II. Inside the State Apartments, you will have the chance to explore the same rooms used today by The King and members of the Royal Family. The rooms here were intended to rival the Palace of Versailles in France, and paintings by renowned artists such as Rembrandt adorn the walls. Guests choosing the option to enter the Castle can also see St George's Chapel, the scene of some of the most famous royal weddings of recent times including The Duke & Duchess of Sussex and HRH Princess Eugenie & Mr Jack Brooksbank. Within the Chapel are the tombs of 11 monarchs, including Queen Elizabeth II, George VI, Henry VIII and Charles I.