Huguette Clark is the socialite daughter of
William Clark, a U.S. senator and Montana tycoon who made a killing from copper mines, railroads and Las Vegas property.
Her birth raised eyebrows in high society because her father - the second-richest man in the U.S. at one point - was 39 years older than her mother and no marriage license was recorded.
In 1952, Huguette Clark purchased this property, and as of 2010, has never moved in.
Category: Homes - Celebrity - Business