The Royal Palace of Madrid (Palacio Real de Madrid) is the official residence of the Spanish Royal Family at the city of Madrid, but it is only used for state ceremonies. Several rooms in the palace are regularly open to the public except during state functions.
The palace is located on the site of a 9th-century Alcázar (Muslim-era fortress), near the town of Magerit, constructed as an outpost by Muhammad I of Córdoba and inherited after 1036 by the independent Moorish Taifa of Toledo. After Madrid fell to King Alfonso VI of Castile in 1083, the edifice was only rarely used by the kings of Castile. In 1329, King Alfonso XI of Castile convened the cortes of Madrid for the first time. King Felipe II moved his court to Madrid in 1561.
The old Alcázar was built on the location in the 16th century. After it burned 24 December 1734, King Felipe V ordered a new palace built on the same site. Construction spanned the years 1738 to 1755 and followed a Berniniesque design by Filippo Juvarra and Giovanni Battista Sacchetti in cooperation with Ventura Rodríguez, Francesco Sabatini, and Martín Sarmiento. King Carlos III first occupied the new palace in 1764.
The last monarch who lived continuously in the palace was King Alfonso XIII, although Manuel Azaña, president of the Second Republic, also inhabited it, making him the last head of state to do so.
The palace has 135,000 square metres of floor space and contains 3,418 rooms. It is the largest royal palace in Europe by floor area. The interior of the palace is notable for its wealth of art and the use of many types of fine materials in the construction and the decoration of its rooms. These include paintings by artists such as Caravaggio, Francisco de Goya, and Velázquez, and frescoes by Giovanni Battista Tiepolo, Juan de Flandes, Corrado Giaquinto, and Anton Raphael Mengs. Other collections of great historical and artistic importance preserved in the building include the Royal Armoury of Madrid, porcelain, watches, furniture, silverware, and the world's only complete Stradivarius string quintet.
References:The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.