The spa of Bad Nauheim, situated in the Wetterau, on the western slopes of the Taunus, is a town of regular streets, well-preserved Art Nouveau buildings and beautiful parks and gardens. Its hot brine springs, rich in carbonic acid, are recommended for the treatment of cardio-vascular disease, rheumatism, psoriasis and nervous complaints.
In the Sprudelhof (Fountain Court) in Bad Nauheim, surrounded by Art Nouveau bathing establishments, are the Friedrich-Wilhelm-Sprudel (34°C/93°F), the Grosser Sprudel (30°C/86°F) and the Ernst-Ludwig-Sprudel (32°C/90°F), with a total flow of around 1.7million liters/374,000gallons a day.
A few kilometers south of Bad Nauheim is Friedberg, once a free imperial city, with a 14th-15th C. castle, a Baroque country house set in a beautiful garden and the Wetterau Museum (regional history since Roman times).
To the west in Bad Nauheim rises the Johannisberg (269m/883ft; observatory). From the top of the hill there are good views of the Steinfurt rose-growing area.
To the west in Bad Nauheim, merging into the forests of the Taunus, is the Kurpark (800 hectares/2,000 acres), with the Kurhaus (large terrace) and a covered thermal brine pool. Northeast of this is the Grosser Teich (rowing boats); on its west side is the Teichhaus-Schlösschen (Salt Museum).
Farther south of the Kurpark in Bad Nauheim is the Pump Room (Trinkkuranlage), with numerous drinking fountains. On the southeastern outskirts of the town, in the New Kurpark, are large halls for the evaporation of brine. On Friedberger Strasse are the Usa Baths (water temperature 28-32°C/82-90°F; artificial waves, water chute).