Find the best Entrance - Buckingham Palace tours entrance tickets at Buckingham Palace, Inner London. Buckingham Palace serves as both the office and London residence of Her Majesty The Queen, as well as the administrative headquarters of the Royal Household. It is one of the few working royal palaces remaining in the world today. Today the State Rooms are used extensively by The Queen and Members of the Royal Family to receive and entertain their guests on State, ceremonial and official occasions. During August and September when The Queen makes her annual visit to Scotland, the Palace's nineteen state rooms are open to visitors.