Bathing is celebrated here as a bathing culture: Visitors enter the water without wearing any clothing - and in the historic swimming hall, the water is comparatively cool at 22 degrees. After all, the water here is primarily intended to cool you down, as there are many other ways to sweat in the thermal baths. The Irish-Roman baths offer the most magnificent ambience for this: a sauna landscape with tepidarium, sudatorium and sanarium - Latin names that show the tradition of the thermal baths. It was built between 1910 and 1913 on the site where the foundations of a Roman sweat bath were once found.

The construction of the Kaiser-Friedrich-Therme was also due to criticism from the Emperor himself. Wilhelm II, a regular spa visitor to the city, had previously complained that Wiesbaden had "the most beautiful spa house in the world", but no representative public bathhouse. Accordingly, the architect August O. Pauly designed an Art Nouveau building that skillfully incorporated Roman traditions.

To this day, the thermal baths are fed by water from the Adler spring, to which the city acquired the rights shortly before 1900 - then as now a great advantage for Wiesbaden's spa guests: here, everyone can enjoy the amenities of the thermal water, even if they are not staying in a spa hotel with its own baths. Anyone entering the thermal baths today should take their time - for massages and treatments, the Russian steam bath, the Finnish sauna and the whirlpool. And for a wellness experience in a unique historical ambience.