 The one-time mega mansion of Hilton Hotel Icon Conrad Hilton won in the market in 2019 for a whopping $225 million, making it the most expensive home in the area. The extravagant Bel-Air estate sits on 8 acres of land, while inside it spans 40,000 square feet of space. Features include 18-foot ceilings, 60 rooms, an architectural pool house with screening room and formal bar, a lighted tennis court, a separate basketball court, a guest house, koi puns, and much, much more. But before we discover everything about the former Conrad Hilton estate, we'll dive into the life and success of the hospitality legend himself.