9 (TIE). Known as "Le Belvedere" this Bel Air mansion was developed by Mohamed Hadid, father to models Gigi and Bella.
Price: $85 million
It has 10 bedrooms — a count that includes two master suites — as well as a Turkish hammam and a ballroom that can accommodate more than 200 people. According to the Wall Street Journal, Hadid has been living in the mansion since last selling it for $50 million in 2010, as the buyers never moved in.
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