10 of the World's Most Insanely Luxurious Houses- 4.Fleur De Lys, Beverly Hills – Mariah Carey's palace. The Fleur De Lys is among the world's most expensive estates with an asking price of $125,000,000 million. Maria Carey's new digs were built by a Texan billionaire on 5 acres; it is 41,000 square feet of pure diva luxury and will also be modeled after the most extravagant home of its time: the Palace of Versaille, the former home of Marie Antoinette.
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