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The guys are hunting the playgrounds of America's rich and famous at the mansions of Newport, R.I. They start at Swiss Village, which includes a building used by the British during the Revolutionary War and a horse stable used by the Kennedys. They dig up an unbelievable find -- a late 17th century coin all the way from Yemen -- an artifact never before found in the U.S.! Next, they visit Malbone Castle, a summer resort for the super-rich that included George Washington on its guest list.