 Downhill from the Villa Hammerstein, the businessman Johann Christian Jung built the weaving sheds and the cotton mill "Baumwollspinnerei Hammerstein" alongside the Wupper between 1835 and 1837.He included workers accommodation in the form of an apartment block.The "state-of-the-art" six-storey mill was designed by the architect Christian Heyden; it is 46 metres long, 15.5 metres wide and 20.5 metres high.