Project 2: The Queen's Guards No trip to England would be complete without a visit to a castle, right? We're going to visit Buckingham Palace. The palace, which was built in 1702 by the Duke of Buckingham and later sold to King George III, is Queen Elizabeth II's official London home. It is also where official and ceremonial occasions are held. You can tell when the Queen is home by looking at the flagpole on top of the palace. When she is there her special flag will be flying. The palace is…