The Royal Palace of Madrid is the official residence of the King of Spain; nevertheless, the current kings do not live in it, but in the Palace of the Zarzuela, reason why it is used for ceremonies of State and solemn acts. With an area of 135,000 m² (surface area, almost double that of Buckingham Palace or Versailles Palace), it is the largest royal palace in Western Europe and one of the largest in the world. It houses a valuable historical-artistic heritage, highlighting the set of musical instruments known as the Palatine Stradivarius, and very relevant collections from other disciplines such as painting, sculpture and upholstery. The state rooms and the artistic collections are open to visitors as long as there are no official acts.
It is also known as Palacio de Oriente, despite being located in the western part of Madrid, due to its location in the Plaza de Oriente, so called being located east of the palace. To axis with the palace, and faced, is the other end of the square the Royal Theater.