Golden Door Spa Resort
Where: San Marcos, CA
Why: While the weeklong retreats at the Golden Door Spa Resort are a little pricey (an all-inclusive seven-day stay is $9,000), you get what you pay for. Included in your stay are daily massages, unlimited fitness classes, four sessions with a personal trainer, and five skin care treatments in its spa. And this is only a small part of everything the award-winning retreat offers its guests on its 600 acres of hills, meadows, Japanese gardens, and citrus groves. Prepare to truly be taken away.