Louis XVI style completed the new Château de Compiègne (1751–83), begun by Louis XV, and decorated it from 1782 to 1786. The King's principal architectural addition to Versailles was the new library on the first floor (begun 1774). He was much more generous to Queen Marie-Antoinette; she redecorated the Grand Apartments of the Queen at Versailles in 1785, and carried out important works on her apartments at the Palace of Fontainebleau and Compiegne, as well as new apartments in the Tuileries Palace. The King also gave the Queen the Petit Trianon at Versailles, and in 1785 bought a new chateau for her at
History of the Palace of Versailles Under the aegis of , chief conservator of the museum from 1952 to 1980, the palace witnessed some of its most ambitious conservation and restoration projects: the Opéra (completed in 1957); the Grand Trianon (1965); the Chambre de la Reine (1975); the Chambre de Louis XIV and the Hall of Mirrors (1980). At this time, the ground floor of the northern wing was converted into a gallery of French history from the 17th century to the 19th century. Additionally, at this time, policy was established in which the French government would aggressively seek to acquire as much of original furniture