Short GR10-side hike to free sulfur springs above Mérens-les-Vals, with small rock pools often around 37-40°C. No toilets or bins, go early.

Thermoludic complex in Ax-les-Thermes, indoor and outdoor pools kept about 33-38°C plus Roman-style rooms. Swimsuit rules apply, kids from 5.

Outdoor granite baths below Dorres village, pools usually 38-39°C fed by a 40°C sulfur spring. Rustic site, bring towel, sandals, and patience.

Drive-up pools at Saint-Thomas-les-Bains near Font-Romeu (34-38°C), plus indoor sauna and vaporarium. Swimsuit, reservations smart in peak weeks, winter.

Mediterranean-style thermal spa in Balaruc-les-Bains near Sète. Swimsuit required, pool access is for ages 8+, treatments 16+. Parking is close, reserve ahead.

Big thermal-water pool and spa in Saint-Paul-lès-Dax. Swimwear rules are strict, kids 3+ only, and saunas are 17+. Easy drive from Dax, bring ID.

Thermoludic baths in Cauterets with indoor and outdoor pools. Babies from 6 months, bring a swimsuit and sandals, winter evenings get busy. Book ahead.

Ressources & Vous at Thermes de Luchon has thermal pools plus the famous Vaporarium cave steam bath. Entry from age 4, easy town access. Bring sandals.

Modern thermal spa in Le Fayet (Saint-Gervais) with mountain views, timed sessions and family slots. Kids allowed 13+ with an adult. Easy train access nearby.

Thermal spa complex in Bagnères-de-Bigorre with pools, steam rooms and a calm lounge. Kids allowed from 5 years, saunas are adults-only. Book ahead on weekends.

Large thermal and spa complex in Loudenvielle, right off the road with parking. Indoor and outdoor pools, reserve timed entry in busy ski weeks too.

Open-air thermal pools in Llo near Font-Romeu, with several basins and a slide area. Easy parking, bring water shoes, book ahead for peak-season weekends.