This is a Google aerial view of the 18-acre estate, which sits on a hilltop with panoramic views of the San Francisco Bay.
Click to the next page to see more pictures. And if you'd like to gawk at even more amenities, like a tennis pavilion and his-and-hers bathrooms, visit Forbes.com:
The front facade of Milner's mansion, known as Palo Alto Loire Chateau. Its design is inspired by 18th-century French architecture.
The living room of the 25,000-square-foot mansion.
The kitchen of Milner's estate, which also has a formal dining room, a ballroom and a wine cellar.
For entertainment, the chateau also contains a home theater (shown) and a spa/gym.
The upstairs hall.
The master bedroom suite is in the south wing.
The master sitting room.
The master suite also includes his and hers bathrooms. To see them, as well as more photos of the billionaire's mansion, go to Forbes.com: