Related Clues:
- Dine, in Düsseldorf
- 5-Down hub
- City near Cologne
- Former German coal center
- City near the Ruhr and Rhine
- German metropolis
- Museum Folkwang city
- Germany's University of Duisburg-__
- City of the Ruhr
- German steel center
- Industrial city of the Ruhr Valley
- Ruhr Valley metropolis
- ThyssenKrupp headquarters city
- City in the Ruhr basin
- 1802 acquisition of 25-Across