Following the development of the thermal springs by the Romans, a healing culture developed which culminated in the construction of the "Trinkhalle" in 1887. Competition between the spa hotels forced their owners to constantly adapt and renovate their buildings, which changed the face of Kranzplatz within a few years in the 19th century. Only the "Schwarzer Bock" hotel has survived since the 15th century.

In 1945, bombs destroyed a large part of the historic square, but the Kochbrunnen temple and a remnant of the colonnade give an idea of the former splendor of Kranzplatz.