It has been the queens official home and the residence in London since 1837.
It is situated near St James Park.
There are 775 rooms, a swimming pool, a cinema, a ballroom and a garden in the palace.
The palace has been a very popular attraction for tourists since 1993.
Visitors can see 19 rooms.
The changing of the Guard is at 11:30 every day in summer and every other day a winter.
The palace is opened in august and September.