Zeche Zollern is a colliery in Dortmund built in 1898/1904. Some parts of the colliery are built like a castle, therefore it is also called ‘Castle of Work’. It became famous for several special architectural elements, e.g. a gate of the machine hall in the style of art nouveau.
- Zeche Zollern (Wikipedia)
- Zeche Zollern (Website)