Spas with reservation required

Santa Barbara, California

A State Street halotherapy spa built around a large underground crystal salt cave, with massage, facials and a relaxation lounge.

Kandy, Central Province

An adults-only Ayurvedic retreat in the hills above Kandy, Sri Lanka, with overnight stays, yoga and a restaurant, but no day-pass access.

Punta Cana, La Altagracia

Upscale day spa in Punta Cana offering massages, facials, a thermal pool and ocean-view relaxation lounges, open daily 9am-7pm.

Chicago, Illinois

Day spa in Chicago's Uptown offering massages, facials and Cryoskin body treatments, with a relaxation lounge and walk-in availability.

Transylvania County, North Carolina

All-inclusive multi-night wellness retreat in Pisgah Forest, NC, combining fitness classes, spa treatments, guided hikes and farm-to-table meals in private

Asheville, North Carolina

Ayurvedic destination retreat in the Blue Ridge Mountains near Asheville, with day-pass spa visits and multi-night panchakarma cleanses by reservation.

Orlando, Florida

A full-service salon and spa in Orlando pairing hair, skincare and waxing services with a monthly membership plan for mix-and-match treatments.

Aquebogue, New York

A day spa in Aquebogue on the North Fork offering massages, facials, aesthetic treatments, makeup and nail care, open daily except Sunday.

Denver, Colorado

Hotel spa on the 5th floor of the Hyatt Regency Denver offering massage and skincare treatments by reservation, open to hotel guests and the public.

Atlanta, Georgia

A Midtown Atlanta hotel day spa with massage, facials, nail services, a steam room and a lounge serving mimosas and spa bites.

Washington, D.C., District of Columbia

A small medical and day spa on Capitol Hill offering facials, body treatments, and wellness sessions from a solo licensed provider.

Chicago, Illinois

A West Loop day spa offering massage, facials and a Halo-IR sauna treatment, with robes and sandals provided and walk-ins accepted alongside bookings.

Minneapolis, Minnesota

A moderate-priced day spa in Minnetonka with a sauna, steam room, thermal pool and cold plunge, set up for couples and adults-only visits.

Charlotte, North Carolina

A moderate-priced day spa in Charlotte's SouthPark area with a sauna, steam room and thermal pool alongside massage, facial and body-treatment menus.

Barcelona, Catalonia

Rooftop day spa at Casa Bonay hotel in Eixample with dry sauna, hammam, ice bath and a Japanese ofuro, booked by small-group circuit or free use.

Tucson, Arizona

A budget-friendly day spa in Tucson offering Thai massage and skin care treatments, with a relaxation lounge for guests between services.

San Diego, California

A budget-friendly massage and medspa in Core-Columbia, San Diego, with private suites, a sauna and a couples treatment room.

Palm Beach, Florida

A day spa in Palm Beach Gardens offering massage, facials, HydraFacial, cosmetic treatments and nail care, open daily except Sunday.

Spring, Texas

Adults-only day spa in Spring, Texas (Houston area) offering massage, facials and body treatments, with walk-ins welcome though booking ahead is advised.

Orlando, Florida

Halotherapy day spa in Orlando's Lake Eola Heights offering salt room sessions, massage and acupuncture, adults only, by reservation.

Houston, Texas

Physician-guided medical spa on the second floor of the Blossom Hotel in Houston's Medical Center Area, offering aesthetics, laser and recovery-focused

Vichy, Auvergne-Rhône-Alpes

Adults-only thermal baths in Vichy using the town's mineral spring water, with a hydrotherapy circuit and thermal pool, booking required.

Sedona, Arizona

A sensory-deprivation float spa in Sedona offering private oval float pods with Epsom salt water, open most afternoons with walk-ins and memberships available.

Seville, Andalusia

A reservation-only private spa suite with pool in Seville's Casco Antiguo, booked by the hour for couples.