The roofs of the bath Posted on January 2, 2010 by Zsolt 5 The roofs of the Széchenyi Bath. The Széchenyi Medicinal Bath in Budapest is the largest medicinal bath in Europe. Its water is supplied by two thermal springs, their temperature is 74°F/23°C and 77°F/25°C, respectively. The roofs of the Széchenyi Bath. The Széchenyi Medicinal Bath in Budapest is the largest medicinal bath in Europe. Its water is supplied by two thermal springs, their temperature is...