Where he lives: Oracle CEO Larry Ellison, seems to think bigger is better when it comes to real estate. Ellison built his Japanese-style property in Woodside, Calif., on 23 acres, complete with 10 buildings, a man-made lake, a bath house, and a koi pond. It's currently valued at around $70 million.

Quiz: Live like Larry Ellison? What super rich celebrity do you spend like?

His splurge? A 23-acre estate in Cali is nothing compared to the 88,000-acre Hawaiian island of Lanai that he purchased in 2012 for $300 million.