Grand Trianon Mansart; this wing, called "Trianon-sous-Bois", housed the Orléans family, including Louis XIV's legitimised daughter Françoise-Marie de Bourbon. The King's youngest grandson Charles de France and his wife Marie Louise Élisabeth d'Orléans also resided there. The Orléans family, who had apartments at the Palace of Versailles, were later replaced by Françoise-Marie's sister; the Duchess of Bourbon, "Madame la Duchesse" lived at the Trianon and later built the Palais Bourbon in Paris, the design of the palace being copied on that of the Trianon. In 1717, Peter the Great of Russia, who was studying the palace and gardens of Versailles, resided 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