Marble House includes Marble House and many other historic Newport mansions, was added to the Register on December 8, 1972 and subsequently designated as a National Historic Landmark District on May 11, 1976. Marble House is one of the earliest examples of Beaux-Arts architecture in the United States, with design inspiration from the Petit Trianon at the Palace of Versailles. Jules Allard and Sons of Paris, first hired by the Vanderbilts to design some of the interiors for their Petit Chateau on Fifth Avenue in Manhattan, designed the French-inspired interiors of Marble House. The grounds were designed by landscape architect Ernest W.
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