Fairmont Sonoma Mission Inn & Spa - an historic spa with its own source of thermal mineral waters, pools, baths, treatments, and a line of spa products, are the main focus of this spa, but there is also a championship golf course and 3 restaurants, sonoma.com

Westerbeke - a delightful, rustic retreat center set in the woods and wine country of Sonoma; this center hosts meetings and retreats and offers fabulous gourmet cooking and massage services (review)

Pebble Beach Resorts/The Lodge at Pebble Beach - set between the pacific Ocean and the Del Monte Forest, this full service spa (massage, hair and nail care, esthetics, body/skin treatments) also has 6 restaurants and lounges, large guest rooms, and 4 golf courses, pebblebeach.com

The Huntington Hotel and Nob Hill Spa, SF - a taste of old San Francisco elegance with modern amenities above Huntington Park and Grace Cathedral, this hotel offers luxurious suites, the Big 4 Restaurant and bar, a pool, and a full service spa with couples treatment rooms, huntingtonhotel.com

Post Ranch Inn, Big Sur - This spa resort is set atop the cliffs on a large property, surrounded by nature; it offers massages and spa treatments, treatments, yoga, guided hikes; there are a number of accommodation choices including "tree houses" for two! postranchinn.com

Ventana Inn & Spa, Big Sur - located in natural surroundings on 243 acres, rustic and yet elegantly appointed lodging, fine dining, Japanese hot baths, daily yoga, and spa services, ventanainn.com

Claremont Resort & Spa - since 1915 this resort set into the hills of Berkeley on 22 acres, has been a retreat for wealthy San Franciscans, claremontresort.com

Asilomar - situated along the coast of the Monterey Peninsula, this ocean-front retreat has beaches on one side and forests on the other; it can serve as a corporate retreat, wedding location, or a vacation getaway, visitasilomar.com

Osmosis: The Enzyme Bath Spa - Japanese style retreat (day spa) that offers the unique cedar enzyme bath--a "rejuvenating heat treatment," massage and facial treatments, pus tea in their Japanese garden, sonoma.com

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