The Riviera Palm Springs has been a true Hollywood institution since the 1960s, when it was featured in the film Palm Springs Weekend and its regular clientèle included members of the Rat Pack. The resort's in-house spa, SpaTerre, helps maintain that illustrious reputation with 11,000 square feet of steam rooms, pools, and other relaxing amenities. In the Buddha Lounge, water trickles down mosaic walls and palm trees sprout up around an indoor pool. The mosaics make another appearance in the treatment rooms, where they're joined by massage beds, private showers, and tubs strewn with flower petals.

In order to relax as much as possible, spa guests are invited to take advantage of the Buddha Lounge up to two hours before and after their treatments. That's a good thing, because you'll want to hang on to the experience as long as possible, whether indulging in a signature facial or a Balinese massage with acupressure. The massage and body treatments can all be booked as couples treatments, which is great if you're traveling with a companion or just really attached to your suitcase.