In both corners can be seen two small towers surmounted by domes resting on shallow circular drums with small windows that illuminate the interior, in one of which is set a clock. The lobby is decorated with sculptures and on the top floor are three marble busts inside alcoves representing Louis XIV of France, his wife Maria Theresa of Spain and their son Louis, the Grand Dauphin. These busts were made in 1683 by French sculptor Antoine Coysevox. The presence of these three French characters in the palace is explained by the connections to the Spanish Royal Bourbon family with the French monarchy and particularly The Grand Dauphin who was the father of Philip V and his parents, the grandparents of Philip. In almost all halls of are clocks of all sizes and characteristics, as King Charles IV was a collector of clocks and an Horologer. Salón de Guardias de la Reina (Space for the guards of the Queen) This salon is decorated with three mural scenes from the life of King Solomon, painted by Italian Luca Giordano. The furniture is of olive wood from the time of King Charles IV, and the clocks are from the collection of Charles IV. Salón de la Reina Isabel II (the room of Queen Isabel II) This salon is decorated with mythological scenes painted by Luca Giordano: Jupiter and Leda, Aeolus (the god of wind) and Triptolemus (the threefold warrior). The furniture is of Empire style. Antecámara de Música (Musical antechamber) Popularly known as Salón del tranvía, it was nicknamed "the tram-station". This space was used for reception of important personalities. It is decorated with biblical scenes of the 17th-century Italian school and religious paintings by Francesco Solimena. Sala de Música de la Reina (The music room of the Queen) An olive wood piano made in England was a gift of Empress Eugénie de Montijo to Queen Isabel II. The rest of the furniture is Empire style mahogany. The bronze neo-Gothic lamp hanging from the ceiling is 19th-century. Salón de Billar (The billiard room) Anteoratorio de la Reina (The ante-oratory of the Queen) This room features a mosaic made from tessera produced in the Vatican workshop. It was a gift from Pope Leo XIII to King Alfonso XII on the occasion of his marriage to Maria Christina of Austria. Oratorio de la Reina (Queen's oratory) The windows overlook the central courtyard. Rebuilt in