Related Clues:
- City between Dortmund and Duisburg
- Ruhr Valley hub
- Deutscher dorp
- Ruhr Valley industrial city
- German industrial center
- German industrial hub
- Ruhr hub
- City north of Cologne
- German coal city
- Rebuilt city north of Cologne
- Krupp family home
- Ruhr River city
- West German city
- Original Krupp Works city
- Museum Folkwang site