The sculptor Hugo Berwald from Schwerin created the marble bust of Wiesbaden's first spa director, Ferdinand Hey'l, which was erected on his birthday, October 7, 1907, on the large circular path in the spa gardens. Hey'l had died on August 21, 1897. At the suggestion of the carnival society "Sprudel", around 150 "friends and citizens" of Wiesbaden published an appeal in the newspaper in April of the following year asking for donations for "a permanent mark of honor in memory of the honorary citizen of Wiesbaden".

Although the memorial committee included the crème de la crème of Wiesbaden - including Lord Mayor Carl Bernhard von Ibell, theater director Georg von Hülsen and the doctor and hotel owner Wilhelm Zais - it took almost ten years for the memorial to be completed. Hugo Berwald had known the spa director well and had already made a bust of him a few years before his death, which is why this artist was chosen. At the unveiling, various speakers praised Hey'l's successful portrayal. The realistically captured Greek marble portrait bust shows the spa director in the last decade of his life. It stands on a neo-baroque granite plinth with a stepped base bearing the inscription "Dem Kurdirektor Ferdinand Hey'l 1830 - 1897".