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.
Chateau Impney Across 2014, Chateau Impney embarked on a tree planting scheme to restore its 110 acres of parkland to Corbett's original intentions. The scheme saw over 200 trees planted within the grounds of the Chateau, the cultivation of an orchard to allow the hotel to become more self-sufficient and the removal of fencing to allow the grounds to return to the open parkland setting that was present during Corbett’s residency. In the 1950s and 1960s, the hotel hosted the Chateau Impney Hill Climb speed trials. The first event took place in 1957, and the original course was long. The event attracted