Spas with groups

Temescal Valley, California

Adults-only hot springs resort in Temescal Valley with 19 outdoor mineral pools, red clay baths, and a cave-like grotto, open daily 9:30am-5pm.

Vail, Colorado

Hotel spa and recovery club in Vail Village with hot tubs, cold plunge, sauna, salt room and a gym, open to day-pass visitors.

Helsinki, Uusimaa

Central Helsinki day spa and gym near Kaivopiha, with a €39 day pass covering two hours of sauna and fitness access.

Nashville, Tennessee

A Finnish-inspired bathhouse and salon in a converted East Nashville factory, with sauna, steam room, cold plunge and private suites for couples.

Houston, Texas

Upscale day spa at The Houstonian in Houston with 22 treatment rooms, soaking pools and a sundeck; pool access comes with a 50-minute-plus treatment, not a

Reykjavik, Capital Region

Eight oceanfront geothermal pools in Hvalfjörður, 45 minutes from Reykjavík, plus steam baths, a bistro and guest houses for rent.

Ischia, Campania

Family-run thermal pool park on Ischia's Maronti beach, open since 1973, with three sulfur-water pools, a sauna and direct beach access.

Aguas Calientes, Cusco

A moderate-priced day spa in Aguas Calientes offering massage and beauty treatments aimed at travelers recovering from the Machu Picchu trek.

Pagosa Springs, Colorado

A wellness lounge and day spa in Pagosa Springs offering yoga, pilates, sound baths and bodywork, with day passes and walk-in classes.

Tucson, Arizona

Jasmine Spa is a Tucson day spa on Prince Road offering licensed massage, including couples and group sessions, with walk-ins and reservations both accepted.

New York City, New York

A 24-hour Korean jjimjilbang-style day spa in Midtown Manhattan with saunas, a soaking tub, and a $135 body-scrub signature treatment.

Miami, Florida

A Peruvian-themed day spa inside the Victor Hotel on Ocean Drive, South Beach, with a hamam, steam room, sauna and a couples suite.

Oslo

Waterfront sauna spot on Aker Brygge with shared and private saunas, sea bathing, and sauna boat trips on the fjord.

Saratoga Springs, New York

A floating Nordic-style sauna moored on Saratoga Lake, with a 15-person cabin, roof terrace and lake plunge, open daily except Monday.

Portland, Oregon

A membership-driven wellness club in downtown Portland with hot pools, sauna, steam room and cold plunge, plus massage, skincare and fitness classes.

Chicago, Illinois

Day spa in Burr Ridge, about 20 miles outside Chicago, built around a hydrotherapy circuit with whirlpool, cold plunge and steam room.

Kraków, Lesser Poland

Day spa inside Hotel City SM in Kraków's quiet Łagiewniki-Borek Fałęcki district, offering massages, body and facial treatments, and couples packages.

Portland, Oregon

A Northwest Portland massage studio built around customizable, couples-friendly bodywork, with add-ons like cupping and hot stones, open daily 7am to 10pm.

Santa Cruz, California

A communal hot-tub and sauna garden in Santa Cruz, modeled on a Japanese bathhouse, with day passes, private rooms, and massage add-ons.

Houston, Texas

A Montrose day spa on West Alabama Street offering massage, facials and body treatments, with walk-ins welcome and no membership required.

Monroe, Utah

Natural hot spring pools fed by mineral water in rural Monroe, Utah, open 24/7 with day-pass soaking and funky bus and cabin lodging on site.

Sedona, Arizona

Day spa in Sedona offering massage, medi-spa facials, acupuncture, Ayurveda and nail services, with group and couples bookings.

Scottsdale, Arizona

North Scottsdale day spa with massage, facials, sauna, steam and a thermal pool, plus private suites for couples and groups.

Park City, Utah

A Park City massage studio offering 11 treatment types in-house or by outcall to hotels and condos, with couples sessions and group bookings.