This 67,000 square foot mega mansion is located at 13-16 Carlton House Terrace in London, England. It is comprised of 4 interconnected, 6-story white stucco Georgian houses. It is owned by the Hinduja brothers, who control the Hinduja Group, a multinational conglomerate with interests in oil, automobiles, banking, real estate and media. They are worth an estimated combined $8 billion! The brothers purchased the property back in 2006 for $95 million (for a 125-year lease) and then spent another $95 million renovating the entire thing!! It features 25 bedrooms, 6 formal reception rooms, two dining rooms, vast hallways, red-carpeted grand staircase, gym, 12-seat home theater, indoor swimming pool and a penthouse apartment on the top floor. The brothers also own a 25,000 square foot property across the street from this one. A nearby home recently came on the market for $400 million, meaning the brothers’ home might just be worth a staggering $500 million!

*Thanks to HOTR reader Justin for the tip!