Cassiopeia Therme Badenweiler

Cassiopeia Therme is the modern thermal bathing facility in Badenweiler, evolved from the former Markgrafenbad building constructed in 1874–1875. Badenweiler's warm springs originate from the geological formation of the Upper Rhine Valley graben and were developed by the Romans around 75 CE as Aquae Villae, with baths dedicated to the goddess Diana Abnoba (archaeological remains, including a dedication stone, survive). Today's Cassiopeia Therme offers pools including a domed bath (32°C), marble bath (34°C), and grotto (36°C), across more than 1,000 m² of thermal water surface.