The former coal preparation plant of the Zeche Zollverein – a coal mine inscribed as a World Heritage Site now – houses the Ruhr Museum. This museum tells about the history of the Zeche and the Ruhr area.
Ruhr Museum in Essen
Besides technical stuff, you also learn about flora and fauna in the Ruhr area. The illumination is well dimmed. The spare light provide you with an idea of how the working atmosphere in this complex had been.
Though the whole coal mine is well-visited as a UNESCO World Heritage Site, I still found quiet places. So, I had this view right below the museum building.