The Zeche Zollern / Zollern coal mine was the first industrial complex in Germany to be officially protected and preserved as a historic monument. Since 1969 the site and the structures have been completely restored. right now they are operated as an industrial museum. The mine has been built between 1898 and 1904. It was designed as an exemplary complex of that time. The ground plan was conceived to resemble a castle-like pattern with three wings and an open space with trees in the center.
I took these images with a Nikon F3 camera, PC-Nikkor 2.8/35mm lens, and Ilford XP2 super.