World's most expensive apartment

An apartment at 1 Hyde Park has sold for a record £136 million (approximately US $220 million), making it the world's most expensive apartment and one of the priciest homes of any kind on Earth.  Units in the building start at about £20 million.

The three-storey, 25,000 square foot penthouse was purchased by 44 year-old Rinat Akhmetov, Ukraine’s richest man and the 39th richest person in the known universe.  He had initially tried to conceal his identity by using an offshore company and a confidentiality clause.

The apartment features a wine cellar, bullet-proof windows, and security courtesy of former British Special Forces officers.  Akhmetov is reportedly planning to spend another £60 million to renovate and decorate the flat.