Buckingham Palace
Besides being the official London residence of The Queen, Buckingham Palace is also the busy administrative headquarters of the monarchy and has probably the most famous and easily recognizable façade of any building in the world. Visitors are allowed access by an organized tour to some areas of the Palace. The famous Changing of the Guard ceremony takes place in the forecourt of Buckingham Palace at 11.30 every day in summer, every other day in winter, and lasts about 45 minutes.