Switzerland's spas are shedding their pine chalet aesthetic and reaching new heights. We review six showstoppers around the country.

Dolder Grand, Zurich
THE LOOK A pointy-roofed castle in the hills above Zurich, with two curvaceous modern wings by Foster & Partners and sexy interiors, including a Rolling Stones Suite in rock 'n' roll fuchsia and black.
THE HIGHLIGHT The black Bisazza mosaic free-form swimming pool and the suna-buros-baths filled with glass pebbles.
THE TREATMENT A two-hour Grand Body Ritual that consists of a scrub, a wrap, a bath, and the massage of your choice ($370).
THE 411 41-44-456-6000; thedoldergrand.com.

Grand Resort, Bad Ragaz
THE LOOK Extravagant contemporary—a recent $142 million refurb added a new spa (with a unique Swarovski herbal steam bath and a pool bathed in changing colors), an indoor hot spring, and a Medical Health Center offering cosmetic surgery.
THE HIGHLIGHT The 56 new Spa Suites, with Ragaz mineral water on tap and in-room saunas.
THE TREATMENT The firming La Prairie Caviar Body Treatment ($250), perfect for old goats.
THE 411 41-81-303-3030; resortragaz.ch.

Tschuggen Bergoase at Tschuggen Grand Hotel, Arosa
THE LOOK Outside, glass sail-like towers skimming the snow; inside, a four-story mega-spa in white granite and Canadian maple, with an indoor-outdoor pool. The architect: Mario Botta, who redid La Scala.
THE HIGHLIGHT The rock grotto, with seasonal "experiences"—summer rain, winter storm.
THE TREATMENT The Dermalogica MicroZone SM Facial, which targets specific problems like acne and age spots ($70).
THE 411 41-81-378-9999; tschuggen.ch.

Therme Vals, Graubünden
THE LOOK An irresistible combination of modernist hotel and elemental quartzite bathhouse by Pritzker winner Peter Zumthor.
THE HIGHLIGHT The authenticity of the place: the picturesque valley worthy of Heidi, the famed thermal spring, and the down-to-earth spa menu (mud wraps, eucalyptus baths, four-handed massages).
THE TREATMENT The stress-relieving Shiodhara ($175), in which warm Ayurvedic oils are poured onto the forehead.
THE 41141-81-926-8961; therme-vals.ch.

La Réserve, Geneva
THE LOOK Decadent safari lodge-style hotel by Jacques Garcia (there's even an elephant in the lobby) with a glam spa—white-leather chairs, jellyfish lamps, pink-curtained changing rooms.
THE HIGHLIGHT The combination of hip, happening hotel (with DJs in the bar) and serious destination spa.
THE TREATMENTThe five-day Better Ageing program, said to increase longevity ($3,700).
THE 411 41-22-959-5959; lareserve.ch.

Cinq Mondes Spa at Beau-Rivage Palace, Lausanne
THE LOOK A grand nineteenth-century hotel with a contemporary green-glass-cube spa extension.
THE HIGHLIGHT The 50-foot indoor-outdoor pool opening onto Lake Geneva.
THE TREATMENT The Jeunesse et Eclat Taoist Face Care Massage, which focuses on the acupressure points of the face ($140).
THE 411 41-21-613-3333; brp.ch.