George Soros (#97): Ketchum, Idaho

When it opened in 1936 as America's first destination ski resort, celebrities such as Ingrid Bergman, Clark Gable and Errol Flynn quickly adopted Sun Valley as their winter playground. Years later, the locale's ideal ski conditions, art galleries and five-star restaurants still resonate with notable homeowners, including Arnold Schwarznegger, Bruce Willis, Steve Wynn and billionaire businessman and speculator George Soros, who has a ski chalet in Ketchum. "It's amazing how close the backcountry is here—literally a five-minute drive from town and you're at the edge of expansive wilderness," says Bronwyn Patterson of the Sun Valley/Ketchum CVB. "It's not at all uncommon to see celebrities at the local drugstore, but residents in this community are so relaxed and friendly that they'll simply smile and keep going without a fuss."