The design of the branch in Darmstadt completed in 1904 was the result of a partnership between Joseph Maria Olbrich and the architectural firm of Heinrich Metzendorf. Olbrich, a prominent member of the Vienna Secession movement, collaborated with Metzendorf to create a building that exemplified the Art Nouveau style, which was popular at the time. This partnership brought together Olbrich's innovative design approach and Metzendorf's practical architectural expertise, resulting in a landmark building in Darmstadt.