1) Hot spring 
The Kochbrunnen (in German: boil foutain) in Wiesbaden is the most famous hot spring in city. It`s a sodium chloride hot spring. Its name refers to the water temperature of about 66 ° C. The source on the Kochbrunnenplatz was first mentioned in 1366 as Bryeborn (Brühborn) and 1536 as Syedenborn (Siedeborn). The productivity is about 360 liters ....