Royal Alcazar of Madrid

The Royal Alcázar of Madrid (Spanish: Real Alcázar de Madrid) was a fortress located at the site of today's Royal Palace of Madrid, Madrid, Spain. The structure was originally built in the second half of the ninth century, then extended and enlarged over the centuries, particularly after 1560. It was at this time that the fortress was converted into a royal palace, and Madrid became the capital of the Spanish Empire. Despite being a palace, the great building kept its original title of Alcázar (English: "fortress").

The first extension to the building was commissioned by King Charles I (Charles V, Holy Roman Emperor) and completed in 1537. Its exterior was constructed by the architect Juan Gómez de Mora in 1636 on a commission from King Philip IV.

As famous for its artistic treasures as it is for its unusual architecture, it was the residence of the Spanish Royal Family and home of the Court, until its destruction by fire during the reign of King Philip V, on Christmas Eve 1734. Many artistic treasures were lost, including over 500 paintings. Other works, such as Las Meninas by Velázquez, were saved.

There is much documentation (numerous texts, engravings, plans, paintings and models) on the building layout and exterior between 1530 and 1734, when they were destroyed in a fire. However, images of the building's interior and references to its history are scarce.

The first drawing of the Alcázar was done by Cornelius Vermeyen in 1534, three decades before Madrid was named as the capital of Spain. The drawing shows a castle divided into two main parts, which may correspond, at least partially, to the structure of the Muslim fortress on which it is built.

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