The discovery of the medical quality of Saint Odile spring in Avène: A horse belonging to the Marquis of Rocozels was turned loose to roam the slopes of the Black Mountain in southwest of France due to a severe skin disease. It found a thermal spring near Avène. After drinking from the spring and rolling in its waters, the horse's coat became shiny again and soon its skin disease was completely cured. Then the Marquis of Rocozels, who was then the owner of the site, builds the first thermal spring facility in Avène to treat patients suffering from atopic dermatitis, eczema, psoriasis, and burns. The reputation of the Avène thermal spring center quickly grows, and Avène Thermal Spring Water, known for its soothing properties to treat skin diseases, is acknowledged by the French government to be of "public benefit".