Between 1838 and 1913, the arcade ("Arkadenbau") was built around the spa garden by Friedrich von Gärtner, as well as the halls for the use of the mineral water ("Brunnenhalle") and for promenades ("Wandelhalle"), following a design by Max Littmann. Littmann also designed the "Kurtheater" (spa theatre), completed in 1905, and the concert hall "Regentenbau", inauguratet in 1913. The train station building, with its Renaissance revival façade, was built in 1874 under the supervision of Friedrich Bürklein. The "KissSalis Therme" was opened in 2004. It is one of the largest wellness baths in Europe, and the largest building project in the town since World War II.