Termas de Vizela

Termas de Vizela sits in the town of Vizela in the Minho region, whose waters have reportedly been known since Roman times. The first modern bathing facilities were built in 1785, and by the 18th century the town had earned the nickname 'Rainha das Termas de Portugal' (Queen of Portugal's Thermal Spas). The spring water is mineralized (365 mg/L), containing fluorides, sulfates, chlorides, silicates, hydrogen sulfide and sodium, emerging at roughly 46.4°C with a pH of 9.1. The municipality is noted for having some 33 distinct thermal springs, ranging from 15°C to 63°C, the best known being the 'Bica Quente' in the town's main square.