English: Mineral springs in Spa Sliač - Information Board (The Sliač spa has been known for over 750 years for the healing qualities of its mineral waters. The oldest reference to the spa at Sliač dates back to 1244, i.e. the reign of king Belo IV. On the spots where from time immemorial there had been a spring of warm thermal water, in the old days there was a plain hole used by women to soak linen. After a serendipitous discovery, whereby a woman suffering from hydrops had her swollen legs cured, the local people started to use the water for baths. Their numbers grew from year to year, spreading the news of the Sliač springs‘ healing nature. The spa‘s most characteristic natural phenomenon are travertine minerals, whose presence has to do with local eruptions of mineral waters. Successful therapy at Sliač is centred around these mineral springs, with the Kúpeľný prameň being the most important and powerful in therapeutic terms. The remaining four springs are less rich, and are used for general consumption of mineral water. There are just three other locations in the world with a composition of healing mineral water similar to that of Kúpeľný prameň (Argentina, Australia, Spain).)