Spas with adults only

San Diego, California

A 21-and-over hotel spa in San Diego's Gaslamp Quarter with sauna, steam room, cold plunge and thermal pools, open to hotel guests only.

Hudson Valley, New York

A day spa in Rhinebeck Village offering skin and wellness treatments, with VIP memberships and walk-in availability by reservation.

San Francisco, California

A reservation-only day spa on El Camino Real in San Bruno specializing in head spa therapy, scalp care and lash services for adults.

North Royalton, Ohio

A North Royalton day spa built around a salt room and sauna, with adults-only halotherapy sessions on a walk-in or reserved basis.

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.

Albuquerque, New Mexico

Hotel Zazz is an adults-only boutique hotel in Albuquerque's Nob Hill district with an on-site spa, heated pool and speakeasy lounge.

San Francisco, California

A Korean day spa in San Francisco's Western Addition offering massages and skin treatments, open daily to adults and couples.

Houston, Texas

A rooftop pool, cabanas, fitness center and yoga room at this Houston hotel are open to non-guests via a $60 adults-only day pass.

Miami, Florida

A hotel spa in downtown Miami with a day pass covering sauna, steam, cold plunge and thermal pools, plus 13 treatments on the menu.

Jemez Springs, New Mexico

Walk-in outdoor mineral hot springs in Jemez Springs, NM, with four pools kept between 98 and 105°F and a $25 one-hour day pass.

San Francisco, California

A Japantown bathhouse open for 50+ years, with a Japanese-style thermal pool and relaxation lounge, reservation required, adults only.

Seattle, Washington

A family-run day spa in Seattle's Madison Valley focused on massage therapy, open daily except Monday from 11am to 8pm.

Scottsdale, Arizona

A resort spa inside Kimpton Miralina Resort and Villas in Scottsdale, open only to hotel guests aged 18 and up.

San Juan

Adults-only hotel spa inside La Concha Resort in Condado, San Juan, offering couples massages and a small treatment menu for guests 18 and up.

Austin, Texas

Adults-only resort spa on Lake Austin offering all-inclusive overnight stays and limited day passes to pools, saunas, steam rooms and lake activities.

Las Vegas, Nevada

A Henderson day spa in MacDonald Ranch offering massage, facials and a Himalayan salt lounge, with walk-in and reservation options.

Las Vegas, Nevada

Hotel spa inside Fontainebleau Las Vegas offering a relaxation lounge, open daily 9am to 7pm, restricted to hotel guests and adults.

Las Vegas, Nevada

A hotel spa at the Flamingo Las Vegas open daily 8am to 5pm, available only to hotel guests for treatments and fitness facilities.

New Orleans, Louisiana

Hotel spa and rooftop wellness deck in New Orleans' CBD with sauna, steam, cold plunge and thermal circuits, restricted to guests 21 and up.

New Orleans, Louisiana

A medical spa in Chalmette, just outside New Orleans, open weekdays with moderate pricing and an adults-only policy.

Charleston, South Carolina

A medical spa in Charleston's South of Broad neighborhood, open Tuesday through Saturday, adults only, by appointment.

Honolulu, Hawaii

A hotel spa inside Hilton Hawaiian Village in Waikiki, open daily 9am–5pm, reserved for resort guests and geared toward couples and adults.

Sedona, Arizona

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

Miami, Florida

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