Spas with upscale

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.

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.

Los Angeles, California

Japanese-style day spa in Beverly Hills offering massage and bodywork for solo visitors and couples by reservation.

The Hamptons, New York

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

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.

Glenwood Springs, Colorado

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

Philadelphia, Pennsylvania

A reservation-only hotel spa inside W Philadelphia's Ritz-Carlton Residences in Center City West, open daily with a day-pass option.

Kauai, Hawaii

Open-air hotel spa at Grand Hyatt Kauai in Poipu, offering massage, facial and body treatments with Hawaiian botanical ingredients, by reservation.

Sonoma, California

Upscale day spa in Sonoma offering facials, bodywork, Endermologie and sound healing, with a relaxation lounge and membership option.

Miami, Florida

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

Hudson Valley, New York

Hotel spa at a small Hudson Valley inn on 75 riverside acres in Milton, NY, open to overnight guests by reservation while the spa undergoes renewal.

Los Angeles, California

A hotel spa at the Conrad Los Angeles in Downtown LA, open only to hotel guests by reservation, with an adults-only, couples-friendly setting.

Miami, Florida

A medical spa in Brickell's Latitude One building offering Botox, IPL photofacials, body contouring and massage by appointment.

Napa Valley, California

A medical spa in downtown Napa offering facials, injectables and nonsurgical body contouring, formerly Lift Aesthetics, now under the Destination Aesthetics

Scottsdale, Arizona

A reservation-only medical spa in South Scottsdale's Old Town area focused on non-invasive red light skin rejuvenation treatments.

Dallas, Texas

A medical-leaning day spa in Vickery Meadow, Dallas, focused on facials and body-contouring treatments like ultrasonic cavitation.

Encinitas, California

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

Montecatini Terme, Tuscany

Adults-only hotel spa in Montecatini Terme built around a four-elements wellness philosophy, open daily 11:00-19:00 with day passes by reservation.

Sedona, Arizona

Medical spa in Sedona offering injectables, lasers, body sculpting and device-based skin and wellness treatments by appointment.

Hudson Valley, New York

A French-inspired hotel spa in the center of Rhinebeck village, open to overnight guests by reservation.

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.

Naples, Florida

A medical spa in Naples offering consultations, skin analysis, laser treatments and medical weight loss programs, open weekdays by appointment.