9. Kensington Palace Gardens
Value: $140 million
The house is found standing in London and in the city’s Billionaires Row. Own by the Russian billionaire Roman Abramovich who also happens to own a private investment firm called Millhouse LLC and the English Premier League’s Chelsea Football Club. One can easily guess how the house has an auto museum, a health center even a tennis court. And reports have it that there are plans to extend the home and make it more luxurious and comfortable.