When you are in the Piccadilly Circus area, it would be worthwhile to venture out to the nearby St James’s Palace (which could also be done after you visit Buckingham Palace). Built between 1531 to 1536 in a Tudor style architecture by King Henry VIII, today this is the most senior royal palace in the country. It remains to be a working palace and a venue to host official receptions, as well as being used as a residence for number of royal families, including Princess Royal and the daughters of the Prince Andrew, the Duke of York.