Spas with upscale

Lake Tahoe, California

An adults-only hotel spa at the Everline resort in Olympic Valley, open to day visitors and hotel guests Thursday through Sunday.

Asheville, North Carolina

A reservation-only, adults-only spa inside Grand Bohemian Lodge in Biltmore Village, open to hotel guests only.

Orlando, Florida

A hotel spa inside the Hyatt Regency Orlando conference hotel on International Drive, open daily for guests only.

Napa Valley, California

Adults-only resort spa in Napa Valley with pools, sauna, steam and a fitness center, open to hotel guests and club members via day pass.

Scottsdale, Arizona

Adults-only resort spa inside Talking Stick Resort in Scottsdale, open daily with couples-friendly treatment rooms and day-pass access for hotel guests.

San Diego, California

Hotel spa at The Lodge at Torrey Pines in La Jolla, with ocean-facing treatment rooms near the Torrey Pines State Natural Reserve, open daily 8am–6pm by

Los Angeles, California

A medical spa in Silver Lake, Los Angeles offering body contouring, massage, hair removal and skin treatments in private suites, open daily 9am to 10pm.

Houston, Texas

Thompson Spa is a hotel spa in Houston's Fourth Ward open only to hotel guests, with reservations required and an adults-only, couples-friendly setting.

Washington, D.C., District of Columbia

A hotel spa inside the Waldorf Astoria on Pennsylvania Avenue NW, open daily with adults-only access and both day-pass and guest-only policies listed.

Atlanta, Georgia

An adults-only hotel spa in Buckhead with private treatment suites and a relaxation lounge, open daily with a day-pass option.

Vail, Colorado

Hotel spa at The Hythe in Vail offering treatments and a relaxation lounge, open daily 9am-7pm, reservation required.

Scottsdale, Arizona

A skincare-focused day spa in South Scottsdale offering facials and treatments using SkinBetter and GlyMed product lines, open weekdays by appointment.

Kyoto

Hotel spa on the 2nd floor of Dhawa Yura Kyoto in Higashiyama, offering private-suite treatments by Banyan Tree Academy-trained therapists.

Houston, Texas

A hotel spa inside The Laura Hotel in downtown Houston offering massage, facial and nail treatments for solo visitors, couples and groups.

Buxton, England

A hotel spa built into Buxton's historic Crescent, centred on a thermal pool, hydrotherapy circuit and salt room, open to hotel guests only.

Velingrad, Pazardzhik

Adults-only hotel spa in Velingrad with a mineral-water pool, jacuzzi and massage pool, open to overnight guests of the five-star Kashmir property.

Park City, Utah

A medical spa in Park City offering injectables, aesthetics, body treatments and skincare by appointment only, no day passes.

Tucson, Arizona

Adults-only day spa in Tucson's Triangle area offering lymphatic facials, dermaplaning and a hydrotherapy circuit; reservations required.

Karlovy Vary, Karlovy Vary Region

Adults-only resort spa on the Březová reservoir near Karlovy Vary, open to hotel guests only, with a two-floor wellness centre and outdoor baths.

Jackson Hole, Wyoming

Small hotel spa inside the boutique Rusty Parrot Lodge in downtown Jackson Hole, open only to overnight guests, with massage and facial treatments including

Arima Onsen, Hyogo

Hotel spa in Arima Onsen with Arima's rare iron-rich "ginsen" waters, outdoor baths, sauna and jacuzzi, run as an all-inclusive overnight stay.

Sayulita, Nayarit

A hillside boutique hotel spa outside Sayulita with sauna, steam room, cold plunge and ocean-view pool, open on a day-pass basis.

Miami, Florida

A hotel spa at Eden Roc Miami Beach in Mid-Beach with sauna, steam room, cold plunge and thermal circuits, open to resort guests only.

Taos, New Mexico

A boutique skin and body studio in Taos offering facials, lymphatic massage, Endermologie and head spa treatments by appointment.