On the northern side of the Jabalcón mountain and near the riverbed of the Grande or “Guardal” river is where the natural springs of our Spa’s thermal water are located.

Since ancient times, these waters have been known for their curative properties. They were already known in Roman times, according to Pliny, and the remains from those times were the part of the old Spa (now buried beneath the waters of the dam of Negratin) known under the name of "Roman baths" with the typical departments of Frigidarium, Tepidarium and Caldarium.

Each period, each domination, left its mark on the Zújar spa, whose brilliant history begins to be owned by the lords of Almagro, who populated the surrounding leafy grove, built promenades and gardens, a new hotel and illuminated new medicinal springs. They created a model spa, after visiting and studying the most famous ones of Europe, and they put into use the wonderful Fuente-Amarga, that thanks to the effects it has on the diseases of the digestive system and mainly of the liver, conquered the title of "Cestona de Andalucía"  (Cestona is a famous spa in northern Spain).

What were the remains of a Spa with well-deserved fame, where the highest political personalities of each era went to, is what was buried by the Negratín Lake, everything except its hot springs that now come back to life as a new Spa, the Zújar Spa Resort.

balse del Negratín, todo, excepto sus aguas termales que hoy resurgen en un nuevo Balneario, el Balneario de Zújar.