As of 2004, Bad Nauheim has a population of 30,365. The town is approximately 35 kilometres (22 mi) north of Frankfurt am Main, on the east edge of the Taunus mountain range. It is a world-famous resort, noted for its salt springs, which are used to treat heart and nerve diseases. A Nauheim or "effervescent" bath, named after Bad Nauheim, is a type of spa bath through which carbon dioxide is bubbled. This bath was one of several types of hydrotherapy used at Battle Creek Sanitarium and it was also used at Maurice bathhouse, in Bathhouse Row in the early 1900s, during the heyday of hydrotherapy
