Spas with reservation required

Koh Samui, Surat Thani

A day spa in Bo Phut, Koh Samui, open daily 9am to 11pm with a sauna and traditional Thai treatments for solo visitors and couples.

Lake Tahoe, California

Lakeside day spa in Tahoe City offering massage and Dermalogica facials, open daily 9am-7pm, operating for 35 years.

Mumbai, Maharashtra

An Ayurveda-based day spa on Marine Drive in Mumbai offering massage, detox and beauty therapies with a relaxation lounge and yoga space.

Minneapolis, Minnesota

A Northeast Minneapolis wellness studio rooted in Traditional Chinese Medicine, offering sauna access by reservation in the Bottineau neighborhood.

Piešťany, Trnava Region

A head spa in Piešťany offering scalp treatments, head/neck/shoulder massage and shampoo rituals in sessions from 45 to 120 minutes.

New York City, New York

A Manhattan day spa at 1 Park Ave offering massages, facials and hydrotherapy, with a relaxation lounge and both walk-in and reservation options.

Dobbs Ferry, New York

A Dobbs Ferry day spa with a hydrotherapy circuit, relaxation lounge, massages and facials, open daily with reservations recommended.

Ojai, California

A small, independently owned day spa in Ojai offering facials, massage, head spa treatments, infrared sauna and salt therapy.

Park City, Utah

A sauna-and-cold-plunge day spa in Park City with memberships, private group buyouts, and reservation-only access.

Boston, Massachusetts

A boutique day spa and salon in Charlestown, Boston, offering moderate-priced treatments with a relaxation lounge and mixed walk-in/appointment access.

French Riviera, Provence-Alpes-Côte d'Azur

An Ayurvedic day spa inside Nehô Suites Cannes Croisette offering treatments, consultations and Panchakarma retreats by appointment, open daily 10am–8pm.

Des Peres, Missouri

A moderate-priced day spa in Des Peres, just west of St. Louis, open six days a week with a relaxation lounge and treatments geared toward couples and adults.

Nashville, Tennessee

A Gulch studio for infrared sauna and cold plunge sessions in private suites, open daily with reservations required.

Los Angeles, California

A wellness retreat in Westlake's Wilshire corridor offering cold plunge, sauna and movement classes, built around group and community sessions.

Aachen, North Rhine-Westphalia

Adults-only day spa in Aachen with a hydrotherapy circuit and relaxation lounge, open daily 10am–9pm, upscale pricing.

San Francisco, California

A Traditional Chinese Medicine spa in Pacific Heights offering acupuncture-rooted treatments and botanical skincare, open daily 9am-9pm.

San Francisco, California

Redmint on Union Street is a Traditional Chinese Medicine wellness and beauty spa in San Francisco, open daily 9am to 9pm.

The Hamptons, New York

Adults-only destination spa and 12-room retreat in Water Mill, offering hydrotherapy, yoga, spa treatments and overnight stays by reservation.

Berkshires, Massachusetts

A solo-focused skincare studio in Lenox offering one-on-one facial treatments with natural, eco-conscious products by appointment.

Houston, Texas

A moderate-priced day spa on the 23rd floor of a downtown Houston office tower, open Wednesday through Sunday with a relaxation lounge and sauna.

The Hamptons, New York

Day spa on Montauk Highway in East Hampton offering facials, massage, nails and waxing, open daily 9am–6pm since 2003.

Carmel-by-the-Sea, California

A hotel spa inside Carmel-by-the-Sea's Hyatt Regency Monterey property, with hydrotherapy, sauna and a relaxation lounge for guests and couples.

Naples, Florida

A hotel spa inside the Inn on Fifth in downtown Naples, open daily for massages, facials, nail services, sauna, steam room and lounge access.

Orlando, Florida

Day spa in Southwest Orlando offering facials, chemical peels, microneedling and massage, with walk-ins welcome and reservations recommended.