Haydar Doğal Kaplıcaları ("natural"), in Kütahya province, taps the same steam and thermal water of pH 7.3, with indoor pools, outdoor pools and a sauna.
Insider tip — Natural hot springs (doğal kaplıcalar) in northern Kütahya province, a region rich in geothermal resources stretching from the Simav field in the west to the Emet boron-thermal zone in the east. A rustic natural bathing spot.