The 10 Most expensive houses in the world, their worth, and who owns them (+Photos)

9. Kensington Palace Gardens

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Location: London
Value: $140 million

Details: Located on London’s Billionaires Row, the already tricked-out pad will soon add an underground extension with a tennis court, health center, and auto museum.
Owner: Roman Abramovich—a Russian billionaire and owner of the private investment firm Millhouse LLC. He’s probably best known in the West as the owner of the English Premier League’s Chelsea Football Club.