Factor in a short trip outside London to visit the impressive and historic Windsor Castle. Famous for its architecture and longstanding Royal place of residence, the Castle was built in the 11th century after the Norman invasion. As well as having been used as a military headquarters during the Civil War and as a refuge for the royal family during WWII, Windsor Castle is now Queen Elizabeth II’s favourite weekend home. Today The Queen spends most of her private weekends at the Castle. Windsor Castle is the oldest and largest occupied castle in the world. It is open to visitors throughout the year. Founded by William the Conqueror in the 11th century, it has since been the home of 39 monarchs. The Castle shops offer a wide range of exclusive gifts inspired by the royal palaces and the works of art in the Royal Collection.