Luxury finishes include suede-wrapped walls, walnut paneling, Gaggenau appliances, and a Ralph Lauren glass-and-stainless pool table. There's also a subterranean garage for six cars and a glass elevator that connects every floor, even the rooftop terrace.

Entertainment includes a state-of-the-art movie theater and a huge infinity pool. In 2019, singer-songwriter Alicia Keys snapped up the mansion for a cool $20.8 million. It was originally listed for $45 million, according to TopTenRealEstateDeals.com.

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