Some people consider Yuri Milner to be Mark Zuckerberg’s right hand man. The Russian billionaire entrepreneur is one of Facebook’s biggest investors, having founded Digital Sky and In 2009, he poured $200 million into Facebook, gaining a 1.96 percent stake in the company. That stake later grew, and Milner went on to invest additional money in other leading internet properties such as Zynga and Groupon.

Having established himself as a force to be reckoned with in Silicon Valley, it was time for Milner to find himself a home. He found just what he was looking for in Los Altos Hills and paid a king’s ransom—$100 million—to get it. It is believed to be the most ever paid for a single family home—or rather, chateau—in the U.S.

Of course, most single family homes do not have 25,500 square feet set on an 18 acre lot. Nor do they have a ballroom, a gym and a spa, and a couple of swimming pools too.

In an interview with the Russian press in 2010, Milner said that, “In the past few years I simply do not have time for hobbies.” Now that he has a nice new house, perhaps he can make time.

Read More at CBS 5.