The station went into operation with the opening of the section between Butzbach and Friedberg on 9 November 1850. The original buildings were designed by Julius Eugen Ruhl, but they were replaced by new buildings between 1911 and 1913. As part of a general renovation in preparation for the state horticultural show held in 2010 in Bad Nauheim, the platform heights were increased to 76 cm to provide barrier-free access for the disabled, tactile paving was installed for the visually impaired and the station was given a friendlier appearance overall.
Tracks
Bad Nauheim station has a platform next to the station building and an island platform, a total of three platform edges. On the opposite side of the tracks there is the station building of Bad Nauheim Nord station of the Butzbach-Lich Railway. Historical tourist trains are operated from there by Eisenbahnfreunde Wetterau to Münzenberg. The track connecting Bad Nauheim station to the former state railway is not currently in use. A peculiarity of the Butzbach-Lich Railway is that it runs through the station’s park and ride facility.
Buildings
The station building and the rest of the station buildings are now mostly listed as monuments under the Hessian Heritage Act.
South of the reception building there is a royal pavillon. It was built during the reconstruction of the station between 1911 and 1913 and has a pagoda-like roof. It is on the axis of Lessingstraße, clearly separated from the public entrance building. It has an open hall on the platform side. After it lost its original use with the abolition of the monarchy after World War I, it was used by the German Post Office and it is now used by Diakonisches Werk, a charity.
Services
Before the First World War, Bad Nauheim was the starting point of the Bäderbahn, express trains operated between the spas of Bad Nauheim, Bad Homburg and Wiesbaden. Bad Nauheim is now served by all Regionalbahn services on the Friedberg-Giessen route. The Mittelhessen-Express services as well as individual Regional-Express services on the Frankfurt Hauptbahnhof–Marburg route also stop in Bad Nauheim. However, Regional-Express services on the Frankfurt Hbf–Siegen route and the Frankfurt–Kassel Hauptbahnhof route and long-distance trains do not stop in Bad Nauheim. Morning and afternoon services operating asRE-Sprinter services of the Main-Sieg-Express, which provide commuters with a fast connection to Frankfurt, stop in Bad Nauheim, but are the only services on the line to skip the neighbouring station of Friedberg.