It was in 1881 that the source of the Geyser was discovered in Montrond-les-Bains, while engineers were searching for coal. Thanks to this source, which has a total depth of 502 meters (one of the deepest in the world), the city has been classified as a hydrotherapy resort since 1935. Today, the thermal establishment (which is part of the Thermal Chain of the Sun) welcomes patients from all over France to treat digestive system disorders, metabolic diseases, and rheumatology. This dual therapeutic focus (rheumatology and digestive system) benefits from highly mineralized thermal water, rich in trace elements that have particularly beneficial effects on the entire body.

Next to Les Iléades Thermal Baths, there is now a unique concept thermal spa in the Loire. Its heated indoor and outdoor pools, sauna and steam room area, and experiential showers are accessible to everyone, whether they are undergoing treatment or not.


A charming spa town, just a few kilometers from Saint-Etienne and 100 km from Lyon, Montrond-les-Bains welcomes you in a family-friendly and warm atmosphere. At the heart of the thermal park, guarded by tall hundred-year-old trees, the Montrond-les-Bains Thermal Establishment is a contemporary building, all on one level, with a few openings to the surrounding nature. The treatments are organized in a serene manner, following a coherent path, with minimal movement required. The Montrond resort focuses on two areas: rheumatic conditions and metabolic diseases and digestive system disorders. In addition to the undeniable qualities of the thermal water, you will appreciate the tranquility of the location in this temperate climate station. A professional team will welcome you in a human-scale establishment.


Take care of yourself at the thermal baths of Montrond-les-Bains. In the large park, near the castle and the casino, you will savor your stay with a medically supervised thermal cure. Here, people come to alleviate their ailments, thanks to qualified and caring experts. You can also pamper yourself at Les Iléades, the unique concept thermal spa in the Loire. Dive into the water of the heated indoor and outdoor pools, purify yourself in the sauna and steam room area, or relax with a personalized massage.


Go hiking

Greenway, Loire riverbanks, preserved nature… there is no shortage of hiking trails in Montrond-les-Bains. Among them, two trails for spa guests, one in the city and one in the countryside, particularly suited to the clientele of the thermal baths.

Find your way around