Buckingham Palace is the main dormitory and office of the British monarch in London. It is located in Westminster. It is one of the venues for national celebrations and royal welcoming ceremonies. It is also an important tourist attraction. Buckingham Palace is open to the outside world. The famous handover ceremony of the Guards is held every day in daylight saving time and twice a day in winter saving time, which is a great view of British Royal culture. There are 775 halls in the palace, such as ceremonial hall, concert hall, banquet hall, gallery and so on. The Queen's important state events were held there. The main building of Buckingham Palace is five stories, and its subsidiary buildings include the Royal Gallery, the Royal Horse and the Garden. Both the Royal Gallery and the Royal Matsu are open to the public. It's convenient to take the subway or bus.