The Sironabad in Nierstein was a former Roman bathhouse with two sulfur springs and two freshwater springs. The springs led to early settlements, as finds from Celtic, early Germanic, and Roman times clearly prove. The sulfur spring of the Sironabad was rediscovered in 1802 after being buried for centuries. During cleanup work, copper coins dated 87 to 267 AD and small figurines were found in stone basins surrounded by plaster balls. These finds prove beyond doubt that the fountain was in operation during this period and was used by the Romans. Over the centuries, it was partially rebuilt and has been a listed building since 1937. A bacteriological examination in 1991 led to the following conclusion: the Sirona mineral spring is microbiologically safe drinking water. The Sironabad is located on the B9 at the exit of Nierstein in the direction of Oppenheim (Sironastraße 6, behind the Chinese restaurant).
Further information on visiting can be obtained from the town of Nierstein.

