The thermal baths have been Vernet's reason for existence since the 18th century. The hot springs emerge at 65°C, heavily laden with sodium and sulphur, and are recognised for their effectiveness against respiratory conditions — asthma, bronchitis, sinusitis — as well as rheumatism. The current baths complex on the main road through town offers both curative programmes (typically three-week courses covered by French health insurance) and shorter wellness treatments for casual visitors.
The Belle Époque buildings around the thermal quarter are some of the most attractive in town — grand villa architecture from the period when the spa attracted wealthy invalids from across Europe. Even if you are not taking the cure, a walk through this part of town gives a sense of what Vernet was like at its early 20th-century peak.