Montage Laguna Beach Resort and Spa

Set on one of California’s most spectacular seascapes, this thalasso-minded spa opened to rave reviews a few years back and continues to earn kudos. Designed by Anne Braham, the spa incorporates seaweed and marine products into many of its treatments. And its two-hour-plus water circuit includes a Finnish sauna, steam room, hot tub, and cold plunge. Specialty Check in for an afternoon or four full days, and after completing an in-depth survey on your health, allow a therapist to customize, then personally deliver, a spa-treatment regimen for you. Rates From $500 per night.

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