Part 1, the sewers of the City of Krefeld. Presented by: DasKlärwerk, Water Heritage, Museum 

Released on the European Heritage Day 2020, Part 1, about: which problems the city of Krefeld had to deal with before the times of mechanical industrialisation. And about a certain Mr. Adolph von Vagedes and his plan, unique to this day, to expand the city, the four ramparts, magnificent French boulevards in the Rhineland.