The Széchenyi Thermal Bath is a historic spa complex located in the City Park of Budapest, Hungary. It is the largest medicinal bath in Europe and one of the most visited tourist attractions in the city. The complex consists of 18 pools, including three outdoor pools, and a wide
From Wikipedia
The Széchenyi Medicinal Bath in Budapest is the largest medicinal bath in Europe. Its water is supplied by two thermal springs, one at 74 °C (165 °F) and the other at 77 °C (171 °F).