Fodor's Expert Review Caldes de Boí

The thermal baths in the town of Caldes de Boí include, between hot and cold sources, 40 springs. The caves inside the bath area are a natural phenomenon, with thermal steam seeping through cracks in the rock. Take advantage of the baths' therapeutic qualities at either Hotel Caldas or Hotel Manantial—services range from a mere inhalation (€7.50) to a bath with hydromassage and color therapy (€25) to a mud bath with medical checkup (€40.50). Arthritic patients are regulars.