Sonoma Spa
(457 First St. W., Sonoma; 707/939-8770), a modest day spa in the center of Sonoma, entices with all-natural beauty and health treatments, such as a rose-petal body mask or a European body wrap guaranteeing "a six-inch loss from your total body measurement." Now, exactly how do they calculate that?

Sonoma Mission Inn & Spa (18140 Sonoma Hwy., Sonoma; 707/938-9000), the oldest and most comprehensive spa in northern California, has a menu of treatments as broad as its spa cuisine is lean. The Revitalizer (an herbal scrub, linen wrap, and hot oil treatment) should cure what ails you. Guests at the 170-room inn, a 1927 replica of a California mission, get priority for bookings.

It's hard to choose between a Faccia Bella acupressure "face-lift" and an ancient Ayurvedic body purification ritual (warm oil dripped on the forehead followed by a body brushing and massage) at the intimate Spa at Kenwood Inn (10400 Sonoma Hwy., Kenwood; 707/833-1293). Guests of the inn have the convenience of in-room massages, but anyone can have a poolside pedicure.

The Health Spa at Meadowood
(900 Meadowood Lane, St. Helena; 707/967-1275) combines a verdant setting with the most enticing athletic facilities in the valleys. After a tennis match with the pro or a few miles in the lap pool, succumb to a massage featuring Chardonnay lotion. Day pass available for non-guests.

Mount View Spa (1457 Lincoln Ave., Calistoga; 707/942-5789) occupies a wing of the Mount View Hotel, smack dab in the center of the hot springs town. House specialty: a bath in Golden Moor mud blended with pine oil.