Spas with reservation required

San Diego, California

Medical spa and massage studio in Mission Valley, San Diego, offering massage therapy, facials and med spa treatments like laser hair removal.

Riverhead, New York

Adults-only day spa in Riverhead on the North Fork, open daily 10am–9:30pm with reservation required and a $20 booking deposit.

Houston, Texas

Adults-only day spa in Houston's Hyde Park neighborhood, open six days a week and taking both walk-ins and reservations.

Scottsdale, Arizona

A by-appointment skincare and grooming studio in South Scottsdale, run by esthetician Stacey Grondahl, open daily 10am-4pm for men's facials now extended to

Vail, Colorado

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

Texas Hill Country, Texas

A medical spa on San Antonio's Far West Side offering massage, facials, injectables and laser hair removal, open weekdays and Saturday mornings.

Mexico City, Ciudad de México

An adults-only day spa for couples on Paseo de la Reforma in Cuauhtémoc, Mexico City, open daily from 9am to 8pm.

Scottsdale, Arizona

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

Chicago, Illinois

A Gold Coast medical and day spa combining massage, facials, laser and injectables with a robe-and-locker relaxation lounge, open daily except Tuesday and

Tucson, Arizona

A Japanese-style head spa in a Tucson medical plaza, offering scalp treatments and massage with walk-ins or booked appointments.

Boston, Massachusetts

A moderately priced day spa for adults in Boston's South End, open daily with both walk-in and reservation options.

Houston, Texas

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

Berkshires, Massachusetts

A Great Barrington wellness studio focused on detox therapies like colon hydrotherapy, infrared sauna and liver flushes, by appointment only.

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.

Hudson Valley, New York

An outdoor spa on the Hudson River in Kingston, NY, with two waterfront barrel saunas and garden massage cabins, reservation required.

Vichy, Auvergne-Rhône-Alpes

A Vichy thermal spa offering medically prescribed 18-day cures for digestion and joint pain, plus shorter day-pass wellness sessions using mineral-rich local

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.

Boston, Massachusetts

A day spa on Lewis Wharf in Boston's North End, open daily 8am–9pm, geared toward adults and couples at moderate prices.

Çeşme, İzmir

A day spa in Çeşme's Dalyan district near Alaçatı, open daily 10am to 11pm, geared toward adults and couples with reservations required.

New York City, New York

A small Japanese-style bathhouse near Union Square with sauna, hot-tub onsen, cold plunge and a recovery lounge, open by reservation only.

Prague

A beer-spa and wellness venue in Prague's Nové Město district offering beer-bath tubs, massages, and a saunarium, open daily from 11am to 11pm.

Lima

A Korean-style spa in Surco, Lima, open daily except Sunday, adults only, with walk-ins welcome but reservations recommended.

Catskills, New York

A small day spa in West Hurley near Woodstock offering facials, massage, waxing and advanced skincare, founded by esthetician Debbie Dougan.