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.
Petit Trianon Paris. With the enforced departure of the royal family the next day the Petit Trianon was almost abandoned except for the gardeners and other staff who continued to live there. Renovations that had been underway were interrupted, leaving large sums owed to builders. The former Queen's gardener Antoine Richard was appointed as curator of the gardens and plant nursery in 1792 by the Minister of the Interior. After the final overthrow of the monarchy in July 1792, all of the furniture, art works and other valuables of the Petit Trianon were given to auction, under a decree of the Convention