In the 19th century, heated saltwater public baths opened and became especially popular with higher classes. Others claim that the practice of thalassotherapy is older: "The origins of thermal baths and related treatments can be traced back to remote antiquity.
During the 19th century, heated saltwater public baths began and became favored by higher social strata. Some scholars suggest that thalassotherapy has an even older history: "The roots of thermal baths and associated therapies date back to antiquity."