 The most important thermal bath of the time was the "Friedrichsbad" in Baden-Baden, which was built under the direction of Karl Dernfeld.Its prototypes were the "Raitzenbad" in Budapest and the "Graf-Eberhardsbad" (today the "Palais Thermal") in Bad Wildbad.The largest enclosed foyer ("Wandelhalle") in Europe (3,240 square metres) with its adjoining spring hall ("Brunnenhalle") in the Bavarian state spa town of Bad Kissingen forms a stylistic transition from the 19th to 20th centuries.