The chemical park in Leverkusen near Cologne is a maze of plants, research labs and pipes forming bridges between the numerous buildings crowding the site. It’s one of Europe’s largest chemical parks – thanks to Bayer.
Towering above the chemical park is the Bayer cross, once illuminated by 1,710 light bulbs but now lit up by modern light-emitting diodes. The landmark cross is to Leverkusen what the Brandenburg Gate is to Berlin.
The entire 480-hectare (1,186-acre) production area was once occupied by Bayer alone, but other chemical firms have since settled there.