Spas with hotel guests only

Miami, Florida

Hotel spa deck in downtown Miami with sauna, steam room, cold plunge and thermal pools overlooking Biscayne Bay, day passes from $50.

Palm Springs, California

Resort spa in Desert Hot Springs with mineral thermal pools, open to day-pass visitors and hotel guests, geared toward couples and families.

Hudson Valley, New York

Resort spa at Mohonk Mountain House with a steam room, sauna and outdoor heated mineral pool, open to overnight guests and day-pass visitors.

Dead Sea, Balqa

Resort spa on the Dead Sea shore with 40 treatments, thermal pools, sauna and steam, open to day guests aged 16 and up.

Las Vegas, Nevada

Hotel spa inside Caesars Palace in Las Vegas with a hydrotherapy circuit and relaxation lounge, open daily 9am–6pm for hotel guests.

Lake Tahoe, California

Adults-only hotel spa inside Harrah's Lake Tahoe in Stateline, open daily with weekday and weekend hours that differ.

Tyrol, Bavaria

Hotel spa in Kreuth-Reitrain near Tegernsee with a 3,000 sqm onsen-style bathing area, hot and cold pools, saltwater pools and sauna, open on a day-pass basis.

Las Vegas, Nevada

Adults-only hotel spa inside Harrah's Las Vegas with steam room, sauna, hot tub and fitness center, open daily with set hours for guests.

Las Vegas, Nevada

Hotel spa and fitness center at The LINQ in Las Vegas with steam room and sauna, open daily 9am–5pm, day passes available.

Hudson Valley, New York

A moderate-priced hotel spa in Beacon, NY, open daily 9am–6pm, offering day passes as well as access for hotel guests.

Dallas, Texas

Hotel spa inside The Highland Dallas in Lower Greenville, Dallas, with a sauna, steam room, outdoor pool and couples treatment rooms.

East End, St. Thomas

Hotel spa inside a 30-acre oceanfront Ritz-Carlton resort on St. Thomas's East End, with a $450 day pass for pool and outdoor bath access.

Scottsdale, Arizona

A resort spa in Scottsdale's Arcadia area offering massages, facials, and body treatments, open to hotel guests and day-pass visitors alike.

Tiberias, Northern District

Adults-only boutique hotel spa on the Sea of Galilee in Tiberias, set in a former hospital building, with a seasonal pool and couples' treatments.

Asheville, North Carolina

Upscale hotel spa on Biltmore Estate offering massages, facials, nail services and body treatments, with a day pass option and couples treatments available.

Miami, Florida

A large hotel wellness resort on North Beach with a European-style hydrotherapy circuit, cryotherapy, acupuncture and an oceanfront fitness center.

Lake Tahoe, California

An adults-only hotel spa at the Everline resort in Olympic Valley, open to day visitors and hotel guests Thursday through Sunday.

Napa Valley, California

Adults-only resort spa in Napa Valley with pools, sauna, steam and a fitness center, open to hotel guests and club members via day pass.

Scottsdale, Arizona

Adults-only resort spa inside Talking Stick Resort in Scottsdale, open daily with couples-friendly treatment rooms and day-pass access for hotel guests.

Edinburgh, Scotland

Hotel spa inside The Caledonian on Princes Street with a thermal pool, sauna, steam room and relaxation lounge, open daily 6am to 9pm.

Palm Springs, California

A resort spa in Desert Hot Springs, near Palm Springs, built around natural hot mineral pools, open daily from 8am to 9pm for day-pass visitors and hotel

Phoenix, Arizona

Adults-only hotel wellness setup in downtown Phoenix with a heated pool, sauna and steam room, day passes available for $50.

Washington, D.C., District of Columbia

A hotel spa inside the Waldorf Astoria on Pennsylvania Avenue NW, open daily with adults-only access and both day-pass and guest-only policies listed.

Atlanta, Georgia

An adults-only hotel spa in Buckhead with private treatment suites and a relaxation lounge, open daily with a day-pass option.