Spas with reservation required

Naples, Florida

A Naples medical spa in Park Shore focused on skin treatments like Morpheus8 microneedling and Lumecca IPL, with reservations required.

Las Vegas, Nevada

A moderately priced day spa in a Lone Mountain strip mall in Las Vegas, offering massage and couples treatments by reservation.

Naples, Florida

Sole-practitioner day spa in Naples, FL offering massage, cupping, facials and a plumbed Japanese-style head spa, with private treatment suites.

Los Angeles, California

A day spa on La Brea Avenue near the Fairfax area of Los Angeles offering massages, facials and hydrotherapy, with reservations recommended.

Catskills, New York

A small storefront in Catskill, NY offering whole-body cryotherapy, infrared sauna and red light therapy sessions, open most days except Tuesday and Wednesday.

New York City, New York

A no-frills medical spa in Manhattan built around lymphatic drainage therapy and acupuncture, open daily 10am to 9:30pm.

Santa Barbara, California

A small boutique day spa on State Street in Santa Barbara offering facials, massages and body treatments by appointment, seven days a week.

Zanzibar

A moderate-priced day spa and hammam in Stone Town offering over 50 treatments, including Ayurvedic therapies and a sauna.

Carmel, Indiana

A no-frills contrast therapy studio in Carmel, Indiana, built around a 30-minute sauna-and-cold-plunge circuit for solo visitors.

Dallas, Texas

A no-frills massage studio in North Dallas offering Swedish, deep tissue and its own signature treatment, plus in-home and office visits by appointment.

San Diego, California

Independent massage studio in San Diego's Little Italy offering therapeutic bodywork, hot stone and couples treatments since 2009.

Chicago, Illinois

A medical spa in Chicago's Lincoln Park offering Botox, dermal fillers, laser hair removal, IPL and semaglutide weight-loss treatment, priced in the moderate

Milwaukee, Wisconsin

East Town Spa in Milwaukee's Juneau Town combines a full-service salon and med spa with a thermal circuit of sauna, steam, pools and cold plunge.

Carmel-by-the-Sea, California

A Monterey day spa open since 1999, offering massage, facials, waxing and skin treatments with reservations recommended daily from 9 to 5.

Nashville, Tennessee

A Belle Meade day spa and salon offering massage, facials and hair services by appointment, with no walk-in facility pass.

Las Vegas, Nevada

A no-frills massage and facial day spa on West Flamingo Road in Las Vegas, open daily 10am to 8pm with walk-in and reservation options.

Palm Beach, Florida

A day spa in Palm Beach Gardens offering couples treatments, open daily except Wednesday, with moderate pricing and walk-in availability.

Naples, Florida

Medical spa in North Naples focused on injectables, facials, peels and skin-resurfacing treatments like Morpheus and Votiva.

Aspen, Colorado

Adults-only day spa in downtown Aspen focused on facials, microdermabrasion, micro-needling and Block Therapy fascia work by appointment.

South Jordan, Utah

A day spa and wellness center in South Jordan, Utah, with a salt room, infrared sauna, cold plunge, float therapy and a yoga studio.

Philadelphia, Pennsylvania

Adults-only day spa on Philadelphia's Fabric Row offering massage, facials, acupuncture, waxing and lash/brow tinting by appointment.

San Diego, California

Neighborhood day spa in Mission Hills offering massage, facials, acupuncture and waxing, with couples treatments and walk-in or booked visits.

Ubud, Bali

An adults-only wellness retreat on Ubud's Ayung River offering multi-day healing programmes, thermal circuits and plant-based cuisine by reservation only.

Nashville, Tennessee

Float Horizen is a day spa in Nashville's East End offering sensory-deprivation float tanks, infrared sauna, massage and sound meditation sessions.