Spas with adults only

Philadelphia, Pennsylvania

A second-floor day spa near Rittenhouse Square offering skincare, scalp analysis and its signature Aroma Chakra Balancing Therapy, with a membership discount

The Hamptons, New York

A membership-based wellness club in Southampton with a stadium-seating sauna, cold plunge pools, treatment suites and group classes.

Carmichael, California

A single-room salt cave in a Carmichael strip mall offering 45-minute salt therapy sessions for relaxation and respiratory relief.

San Diego, California

Alice in Wonderland-themed day spa in Mid-City San Diego focused on facials, massage and skincare since 2014, open daily 10am-7pm.

Lima

Day spa in San Isidro, Lima, offering massage, facial and body treatments, with walk-in access most days.

Tucson, Arizona

Day spa near Swan Way Park in Tucson with a cedar hot tub, cold plunge, infrared sauna and massage, bookable by reservation for adults only.

Kyoto

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

Key West, Florida

A hotel spa at Pier House Resort in Key West for guests only, offering couples treatments for ages 14 and up with advance reservations.

Vals, Grisons

Peter Zumthor's quartzite thermal baths in Vals, fed by a 30°C mineral spring, open to day visitors as well as hotel guests.

Glenwood Springs, Colorado

A Sanctuary Spa & Salon is an adults-only day spa and salon in downtown Glenwood Springs open daily except Sunday.

Aspen, Colorado

A day spa in downtown Aspen offering massage, yoga therapy, cupping, and energy work, open daily 9am–8pm for adults and solo travelers.

Scottsdale, Arizona

Adults-only resort spa in Fountain Hills with sauna, steam room and outdoor pools, offering day passes and an amethyst facial as its signature treatment.

Taos, New Mexico

A skincare studio in Taos offering personalized facials and precision sugaring with plant-based, science-backed products.

Tucson, Arizona

A Tucson medical spa focused on acne, pigmentation and anti-aging facials, with customized treatments from licensed estheticians.

Scottsdale, Arizona

A day spa in Scottsdale's Paradise Valley Village open daily 8:30am–5pm, with walk-ins accepted but reservations recommended for couples and solo treatments.

Funchal, Madeira

An adults-only Ayurvedic retreat in Caniço, near Funchal, open daily from 10am to 8pm by reservation.

Santa Fe, New Mexico

A Santa Fe day spa combining yoga, pilates and nia classes with spa treatments, a café and a boutique, open daily 9am–7pm.

Portland, Oregon

A walk-in bathhouse in Portland's Hazelwood neighborhood with a sauna, open daily from 10 a.m. to 10 p.m. for adults only.

Palm Springs, California

Adults-only day spa in downtown Palm Springs, open daily 9am to 6pm, with moderate pricing and both walk-in and reservation options.

Miami, Florida

Upscale day spa in Downtown Miami offering massage, facials, laser hair removal and a relaxation lounge, open Tuesday through Saturday.

Portland, Oregon

Adults-only hotel and thermal springs on NE Alberta St in Portland, with vitality pools, a day-pass option, and spa treatments.

Lake Tahoe, California

A South Lake Tahoe day spa focused on body, combo and foot massage, open daily with reservations required.

Washington, D.C., District of Columbia

A moderately priced day spa in Northwest Washington, D.C., open daily with both walk-in and reservation options for adults and couples.

Carson, Washington

A clothing-optional, adults-only mineral hot springs bathhouse in Carson, Washington, with a $12 day pass and a $30 bath-and-wrap treatment.