Condé Nast Traveler recently rated the 4,600-square-foot Peninsula Spa number one in service and number two in treatments for urban spas, and indeed, this is one of the top spots in the U.S. for pampering. Sure, it's pricey, but what would you expect from the only hotel in Southern California to earn both the AAA Five Diamond and Mobil Five Star awards for many years running? Bonus: The spa underwent a $7-million revamp, adding an extra 1,000 square feet of space, with mosaic tile work in serene shades of blue and pure white Calacatta marble. The spa is the first in North America to offer Shiffa precious-gem oil treatments, which contain rubies, emeralds, sapphires, and diamonds, and are said to bring healing powers. In addition to the seven treatment rooms, you can opt to have some services in one of the Peninsula's famed cabanas overlooking the 60-foot lap pool. They even offer a good selection of services geared toward the guys, such as the 50-minute Men's Foot Recovery and 60-minute Gentlemen's Facial Rejuvenation. The Roof Garden restaurant is the perfect spot for a pre- or post-treatment lunch or tonic. And don't be surprised if you spot an A-lister, as the Peninsula is a perennial celeb favorite.