Los Baños de Coamo
The Baños de Coamo (/ˈbɑːnjoʊs deɪ koʊˈɑːmoʊ/; the "Baths of Coamo" or "Coamo Thermal Baths"), located in the municipality of Coamo, are Puerto Rico's only thermal springs.
Used by the Tainos in the pre-Columbian era, the Baños were believed by many to have healing powers. The Baños became a popular tourist attraction among the early Spanish settlers which prompted the construction of a resort by local entrepreneurs. Coamo was the site of an important battle during the Puerto Rico Campaign of the Spanish–American War and were subject to artillery bombardments which damaged the resort. The historic Baños and resort were restored during the 20th century by the Government of Puerto Rico, becoming once more a popular tourist attraction.
The Taino's who inhabited Puerto Rico before the arrival of Christopher Columbus and the Spanish conquistadors were the first people to discover the hot spring waters of Coamo. According to local legend, the first governor of Puerto Rico Juan Ponce de León, heard about the healing powers of the Baños from the Tainos. Believing that the baths were the Fountain of Youth which he was seeking, Ponce de Leon asked where they were located, however he misunderstood the instructions given to him and instead headed by sea towards a new land which resulted in the discovery of Florida and his death. During the mid-16th century the word spread among the Spanish settlers of the healing powers of the six sulfur-rich spring waters and as a consequence, many of the settlers began to make the regular journeys from San Juan to the mountainous region to enjoy what they believed were the benefits of said waters.
...
Wikipedia