Spas with reservation required

Philadelphia, Pennsylvania

A reservation-only day spa in Blue Bell, just outside Philadelphia, with moderate pricing and adults-only access.

Calistoga, California

MoonAcre Spa & Baths is a day spa in Calistoga with a thermal pool, hot tub and sauna, open daily 9am–5pm and geared toward families and couples.

Marrakech, Marrakesh-Safi

An adults-only destination spa and wellness retreat on the Ourika road outside Marrakech, currently taking names for a waitlist.

Napa Valley, California

A hotel spa at the Napa Valley Marriott Resort, open to hotel guests by reservation, geared toward couples and families.

Hot Springs, Arkansas

A moderate-priced day spa in downtown Hot Springs open daily 9am to 10pm, offering massage services to adults only.

Bartlett, Tennessee

An appointment-only luxury day spa in Bartlett Station, Memphis, with service packages priced up to several thousand dollars.

Pucón, Araucanía

Pangue SPA is an adults-only day spa in central Pucón, open daily 9am–9pm with moderate pricing and reservations advised.

Ixtapan de la Sal, State of Mexico

A moderately priced day spa in the Santa Ana neighborhood of Ixtapan de la Sal, open daily and welcoming families.

Tampere, Pirkanmaa

A budget-friendly public sauna and bathhouse in Tampere, open to walk-ins but reservations are also an option.

Ixtapan de la Sal, State of Mexico

A moderately priced day spa in Ixtapan de la Sal open daily 9am–6pm, with walk-ins welcome but reservations required.

Sun Valley, Idaho

A family-owned medical spa in Ketchum, Idaho, offering skin and wellness treatments since 2008, with walk-ins welcome but reservations recommended.

Bad Blumau, Styria

Rogner Bad Blumau is a Hundertwasser-designed thermal resort in Styria with geothermal pools, outdoor baths and hotel-guest-only access.

Medellín, Antioquia

A couples-focused day spa in El Poblado, Medellín, open daily 9am to 7pm with moderate pricing.

Kansas City, Missouri

A hotel spa inside the Westin Kansas City at Crown Center, open to hotel guests by reservation in downtown Kansas City.

Jackson Hole, Wyoming

Adults-only day spa inside the Teton Club in Teton Village, Jackson Hole, offering personalized treatments by reservation.

Yalova

A budget-friendly adults-only hammam in Yalova Merkez open daily from noon to midnight, with walk-ins accepted but reservations required.

Yufuin, Oita

A small hillside ryokan near Yufuin's town center where every room has its own half-open-air bath filled with 100% source hot-spring water and a view of Mt.

Tulum, Quintana Roo

Beachfront resort in Tulum pairing overnight stays with spa treatments, yoga and fitness classes, open to hotel guests only.

Bodrum, Muğla

A hammam in Gümbet, Bodrum, open daily 10am-7pm for adults and couples, with both walk-in access and a reservation requirement, moderate pricing.

Boston, Massachusetts

Season Four Spa is a small Back Bay day spa offering Swedish, deep tissue and hot stone bodywork plus foot reflexology, open daily 9am-9pm with walk-ins

Big Sur, California

Adults-only hotel spa at Ventana Big Sur with ocean-view treatment rooms, outdoor cabanas for couples, and a 24-hour fitness and yoga space.

Orlando, Florida

A medical spa in Orlando's SoDo district offering injectables, fillers, microneedling and facials, with walk-ins accepted alongside appointments.

Philadelphia, Pennsylvania

A private-reservation spa in Philadelphia's Manayunk neighborhood for date nights, birthday and bachelorette parties, with hot tub, sauna and massage chairs

Atlanta, Georgia

Adults-only day spa in Midtown Atlanta with a relaxation lounge, open daily by reservation at moderate prices.