In 1913 the third chamber with the "Fairy Kingdom" was discovered, and shortly before the outbreak of World War I in 1914 tours began to be offered to the public. At that time a pavilion with café was opened that remained in use in the following decades — including the post-World War II German Democratic Republic, which categorized the "Feengrotten" as an official "Sehenswürdigkeit" (point of Interest) of the GDR, open to foreign tourists. Following German unification, the pavilion was renovated beginning in 1998, and new facilities were added.