Spas with reservation required

San Francisco, California

A Nob Hill facial studio specializing in Biologique Recherche and MBR Cosmetics treatments, with a relaxation lounge for before or after.

San Francisco, California

A boutique day spa in San Francisco's SoMa district offering massage, facials, nails and waxing, plus a retail skincare boutique and relaxation lounge.

San Diego, California

A La Jolla medical spa specializing in lymphatic drainage, colon hydrotherapy and detox treatments, open since 1993, adults only, by reservation.

Las Vegas, Nevada

A day spa on Spring Mountain Road in Las Vegas offering massage, facials and waxing, with a couples room and around 50 treatments on the menu.

San Francisco, California

Oakland float and sauna studio near Grand Lake with private float tanks, infrared sauna cocoons and cryotherapy, open daily 11am-8:30pm.

Miami, Florida

Affordable day spa in Miami's Brickell/Little Havana area with massage, facials, body scrubs and couples sessions, open seven days with walk-ins welcome.

New Berlin, Wisconsin

A moderate-priced day spa and salon in New Berlin, WI offering massages, facials and hair services, with a couples treatment option and daily hours.

Allen, Texas

A moderate-priced day spa in Allen, Texas built around Japanese head spa treatments, facials and couples services, with walk-in and reservation options.

Calistoga, California

A Calistoga day spa on Lincoln Avenue specializing in lymphatic bodywork and facial treatments, with a relaxation lounge for adults and solo travelers.

Ojai, California

Small wellness retreat at the Lavender Inn in Ojai offering massage, facials, and a beekeeping experience, with couples treatments available.

Chicago, Illinois

A West Town day spa built around a beer soak, with sauna, steam room, salt room and thermal pool for couples or solo visits.

Palm Beach, Florida

A Juno Beach day spa with sauna, steam room and pool, offering massages, facials and couples treatments since 2008.

Nipomo, California

A Nipomo day spa at the Monarch Club where massages and facials come with access to a garden hot tub, eucalyptus steam room and lounge.

Tucson, Arizona

A resort day spa at Westward Look in Tucson with a thermal pool, sauna, steam room and cold plunge, open daily 9am-6pm by reservation.

Rocky River, Ohio

Massage-focused day spa in Rocky River offering couples treatments, sauna, steam room and thermal pool, open daily by appointment.

Tucson, Arizona

A massage-focused day spa in Tucson near Casino del Sol, offering Swedish, deep tissue and signature treatments for solo guests and couples.

Seattle, Washington

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

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.

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.

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.

Naples, Florida

A one-on-one day spa inside Salon by JC on 5th Avenue South in Old Naples, offering facials, massages and body treatments by appointment.

San Diego, California

Full-service day spa on the 3rd floor of AquaVie Fitness + Wellness Club in downtown San Diego, offering massage, facials and multi-step body rituals by

Los Angeles, California

Day spa in a Montebello strip mall plaza offering facials, massages and body treatments, open daily with walk-ins accepted.