The so-called Queen's Room, which was intended for Doa Mara Amalia of Saxony, the wife of Charles III, but was never filled because she passed away in 1760, four years before the Palace was inhabited, is divided into three chambers that make up this remarkable area. The architect José Segundo de Lema carried out the King Alfonso XII's request to connect the three dining rooms for formal celebrations, and it was launched in 1879 with the grand supper of the King's second marriage to Mara Cristina de Habsburgo-Lorena.

Since Sachetti designed it in 1737, this enclosure is the only one whose purpose has never changed. It was finished in 1772 and still has all of its original decorations.

Italian aristocrat Felice Gazzola was given the task of choosing the painters who would decorate the hall. The Roberto Michel-designed vault is without a doubt the most stunning feature of the palace due to the opulent effect that the surrounding sculpture and art have on it.

Throne Area. The walls are upholstered with velvet that has been embroidered with silver thread, and the ceiling paintings are by Tiepolo.

One of Giambattista Tiepolo's final pieces, the enormous painted fresco shows The Greatness and Power of the Spanish Monarchy. The Spanish throne is shown being protected by Apollo and Minerva, as well as images of the Virtues. Little lovebirds wearing the Order of the Golden Fleece insignia fly on the opposite side. The overall topic of the ensemble is the exaltation of the monarchy and the current ruler. Particularly noteworthy is the plinth area, where realistic and varied allegories of the numerous Spanish areas and possessions are shown, together with their distinctive characteristics.

The design of the embroideries and the arrangement of the consoles and mirrors, which are arranged in pairs and are all unique but share the same aesthetic, were both created by Giovanni Battista Natali of Piacenza. The hanging's velvet was woven in Genoa and is ruby red with gilded silver embroidery. One of the pinnacles of Spanish rococo can be found in Natali's decorating and Tiepolo's paintings. The fabric covering the walls is new, replacing the previous velvet, which had severely deteriorated, even if the original needlework has been copied to it. This is similar to Gasparini's Chamber.

The majority of the sculptures on display in this chamber now are from the collection that was taken from the Real Alcázar. This is because the Bourbon dynasty attempted to establish itself as the direct descendant of the House of Austria. Some of the bronze sculptures from the Flemish artist Jacques Jonghelinck's "Planets" series, a group of René Frémin's "Cardinal Virtues" statues, clocks by John Ellicott and Ferdinand Berthoud, and the bronze lions flanking the royal throne by Matteo Bonarelli de Lucca are also noteworthy. The chamber is lit by Venetian chandeliers that are constructed of silver and rock crystal. When Velázquez served as the royal aposentador and directly oversaw the decoration of the Royal Sites, he brought both the sculptures of the planets and the lions seated on the throne from Italy.