Enjoyed a two-hour introductory visit to this oasis in the middle of the SI Centrum. The SchwabenQuellen are a series of about 18 different saunas, whirpools, in and outdoor pools of various size and temperature. The saunas range from about 69 to 90 degrees Centigrade and come in both dry and damp varieties.
Pay attention to the signs outside the saunas which announce when the next "Aufguss" is scheduled. Get in early to enjoy the show. The Sauna-Techs will come in, pour Eucalyptus-enhanced water (and ice) on the rocks, then wave towels in the faces of 30 of your newest naked friends to circulate the heat and steam.
And yes, it's 'textile free' .. which means you can go from sauna to sauna in your bathrobe and slippers, but when you go inside, you need only have a towel to sit on. Skin is not allowed on the wood, and shorts are not allowed in the saunas. This helps keep the saunas clean and really isn't a big deal, once you get over the initial shock!