Spas with reservation required

Calistoga, California

Day spa in Santa Rosa offering massage, body scrubs and wraps, facials and eyelash extensions, open daily 9am to 8pm with couples treatments available.

San Diego, California

A locally owned Bankers Hill day spa since 2006 offering massage therapy, organic facials and clinical skincare, including couples treatments.

Ojai, California

A small Ojai day spa run by one certified therapist specializing in lymphatic drainage therapy, by reservation.

Seattle, Washington

A themed-suite day spa in Seattle's SODO district offering massages, facials, couples packages and a few overnight suites.

Chicago, Illinois

A reservation-only medical spa in Streeterville, Chicago offering around 43 aesthetic and wellness treatments under a surgeon's medical direction.

Philadelphia, Pennsylvania

Hotel spa on the third floor of The Rittenhouse overlooking Rittenhouse Square, with massage, facials, body treatments and a salon.

Elkridge, Maryland

A halotherapy day spa in West Elkridge, near Baltimore, built around a salt cave, massage rooms and a yoga studio, aimed at solo adult visitors.

Charleston, South Carolina

Medical spa in West Ashley, Charleston offering facials, medical-grade skincare and body contouring like CoolSculpting Elite and Pixel8 RF, by appointment.

Las Vegas, Nevada

Adults-only day spa inside Red Rock Resort in Summerlin, open daily 8am-8pm with walk-ins accepted but reservations recommended.

Orlando, Florida

Hotel spa at the Rosen Centre on International Drive in Orlando, offering massages, facials, nail care and access to a steam room, pool and fitness center.

Palm Springs, California

Downtown Palm Springs day spa built around a natural hot mineral spring, with private mineral baths, sauna, steam room and massage.

Sonoma, California

Hotel spa at The Lodge at Sonoma with an outdoor terrace, soaking pool, plunge pool and barrel sauna, open daily 9am-5pm, adults-only, reservation required.

Asheville, North Carolina

A day spa in a converted barn on Horse Shoe Farm near Asheville, offering massage and body treatments amid farm and mountain surroundings.

Asheville, North Carolina

A holistic wellness center in downtown Asheville offering acupuncture, massage, infrared sauna, red light therapy, yoga and meditation by appointment.

Napa Valley, California

A single-treatment float spa in Napa offering sensory-deprivation float pods with Epsom salt water, plus dedicated parking and walk-in access.

Salalah, Dhofar

A ground-floor massage and spa center inside the Kyriad Hotel in Salalah, open daily from 10am to 1am with six treatment options.

New Delhi, Delhi

Day spa in Defence Colony, New Delhi offering Balinese, aromatherapy and Swedish massages from Rs. 3000, open daily 9am–11pm.

Vail, Colorado

Medical spa in Eagle-Vail combining acupuncture, massage, facials and detox tech like infrared sauna and red light therapy, by appointment.

Washington, D.C., District of Columbia

Dupont Circle medical spa offering Botox, Sculptra, IV therapy, laser and skin treatments, with complimentary consultations and walk-in availability.

Dallas, Texas

A medical spa on Lovers Lane in Bluffview offering injectables, laser treatments, and skin tightening by reservation, no day passes.

Springboro, Ohio

A wellness center in Springboro, Ohio built around a natural salt cave, with energy healing, sound baths and metaphysical classes for individuals or groups.

Portland, Oregon

Adults-only day spa in Portland's Hosford-Abernethy neighborhood offering facial treatments by appointment in private suites, no walk-ins or day passes.

Hudson Valley, New York

Hotel spa inside The Abbey Inn in Peekskill, overlooking the Hudson River, with six treatments including a Japanese head-and-foot package.

Dublin, Leinster

An outdoor barrel sauna and cold plunge pool setup in Saggart, Dublin, booked in 50-minute sessions for groups and couples.