Spas with reservation required

Boca Raton, Florida

A day spa in downtown Boca Raton open daily 9am-8:15pm, offering facials, massage, body treatments and nail services since 1996.

Byron Bay, New South Wales

Hotel day spa at Crystalbrook Byron offering customizable massages and facials, open daily with Sunday by appointment only.

Santa Barbara, California

A 6,000-square-foot medical and day spa in downtown Santa Barbara combining skincare procedures with massages, facials and body treatments.

Sonoma, California

Evolving Esthetics is an adults-only day spa in downtown Sonoma, open Tuesday through Saturday with both walk-in and reservation options.

Santa Barbara, California

A moderately priced day spa in downtown Santa Barbara, open daily with reservations recommended though walk-ins are accepted.

Lake Tahoe, California

A wellness studio in Tahoe City offering reiki, massage, meditation, sound healing and yoga classes, open daily from 9am to 7pm.

Napa Valley, California

A moderately priced day spa in Napa, open Tuesday through Saturday, 10am to 5pm, suited to solo visits or couples.

Tulum, Quintana Roo

A day spa in Tulum Centro open daily, taking walk-ins but recommending reservations for treatments.

Encinitas, California

Adults-only day spa in Leucadia, Encinitas, about a mile from the beach, with private suites, a relaxation lounge and movement classes.

Langkawi, Kedah

A day spa in Pantai Tengah, Langkawi, open daily from 1pm with moderate pricing and both walk-in and reservation access.

Palm Springs, California

Asian-style massage day spa in Palm Desert offering body massage, foot reflexology and acupressure, open daily 9am to 9pm.

San Diego, California

Day spa in Golden Hill, San Diego, specializing in organic facials, body treatments and waxing, with walk-ins welcome but reservations recommended.

Washington, D.C., District of Columbia

A Northwest D.C. head spa with a relaxation lounge, open daily with both walk-ins and reservations, adults only.

Sedona, Arizona

Massage-therapist-owned day spa in Sedona offering tailored bodywork by appointment or walk-in, open daily 9am to 6pm.

Beitou, Taipei

A hot-spring resort in Beitou, Taipei with private suites, outdoor baths and overnight stays, open to day-pass visitors by reservation.

Washington, D.C., District of Columbia

A Dupont Circle-area day spa on Connecticut Avenue open daily into the evening, with both walk-in and reservation options.

Dubrovnik, Dubrovnik-Neretva

A day spa in Gruž, Dubrovnik, offering massage and body treatments for adults, open daily 8am to 8pm.

Napa Valley, California

A downtown Napa day spa offering massages, facials, body treatments, waxing and nail services a short walk from the town's restaurants and hotels.

Gothenburg, Västra Götaland County

A hammam in Gothenburg's Olivedal district offering traditional oriental-style treatments, open daily from 9am to 10pm.

Athens, Attica

A traditional hammam in central Athens offering steam bathing and a relaxation lounge, open daily, adults only, moderate pricing.

Fez, Fès-Meknès

A traditional hammam just inside Bab Boujloud in Fez's old medina, open daily from 11am to 8pm.

Maui, Hawaii

A nine-room resort spa on Maui's Road to Hana offering lomi lomi and lava-stone pōhaku wela massage, plus a eucalyptus steam room and cold plunge.

Hudson Valley, New York

A day spa in Rhinebeck Village offering skin and wellness treatments, with VIP memberships and walk-in availability by reservation.

Kapaau, Hawaii

An oceanfront eco-boutique hotel and wellness retreat on Hawaii Island's North Kohala coast, open to overnight guests only, not day visitors.