2. Villa Leopolda, French Riviera, France
This villa was built way back in 1902 by King Leopold II Of Belgium. It was recently purchased by a Russian billionaire called Prokhorov with an approximated value of a staggering $750 million! You can see why it was valued so highly. This villa consists of 19 bedrooms and is 27 stories. There happen to be 50 full-time gardeners as well.