Domaine Thermal du Mercantour - Thermes & Spa Berthemont-les-Bains

Domaine Thermal du Mercantour sits in Berthemont-les-Bains, a small thermal village above Roquebillière in the Alpes-Maritimes backcountry. The complex is built around natural thermal water, with two indoor thermal pools and a playful pool, plus an outdoor terrace with a solarium and an outdoor jacuzzi for soaking with mountain views.

Inside, there's a hammam, a sauna and a relaxation lounge for winding down between pool sessions. Treatments happen in eight private cabins, two of which are set up for couples, covering massages and thermal-based care; the on-site count runs to eight treatment types in total. A café-restaurant called Le Panorama handles food and drink on site, so a visit can easily stretch from a soak into a meal.

Access is simple: no membership or hotel stay is required, and walk-ins are welcome alongside bookings. A day pass costs 26 euros, which puts it on the affordable end for thermal spas in the region. The baths are open daily in the afternoon, from 13:30 to 18:30 most days and until 19:00 on Sundays - useful to know since there's no morning session.

The minimum age is 12, so this isn't a spa for young children, but older kids and teens can come with family, and couples treatments are available for those visiting as a pair. Clothing is not optional here, and there are no separate hours split by gender. Given the setting - a village built specifically around its thermal source - this is more about the mineral water and mountain air than spa theatrics.