As early as at the beginning of the 20th century, the reconstruction of the Bayer chemical factory in Leverkusen followed American examples. The inclusion of a rail connection and a transport system inside the plant made it a showcase for a modern enterprise.
Luftaufnahme Bayerwerk Leverkusen, black-and-white photograph, 1923, unknown photographer; source: Bayer AG Unternehmensarchiv, http://www.bayer.de/de/unternehmensarchiv.aspx.