Location: Calabasas, California
Price: $20 million

Will Smith and wife Jada Pinkett Smith have built their dream home and what they call the Smith Compoud—a 25,000 square foot castle. Despite the size, the powerful Smith clan argues that their home is surprisingly intimate and do their best to make it an organic and earthy place. When you have enough money for a place this big, you can call it whatever you want.