Est. worth: $27 million

Not many millionaires can call Tom Cruise their next-door neighbor. Then again, the majority of them living in Beverly Hills most likely want to keep their distance, except the Amazon boss. Bezos owns a 12,000-square-foot residence fitted with a tennis court, greenhouse, swimming pool, and a secondary guesthouse that takes up two acres of land. Recent renovations bumped up the property’s appraisal value.