Related Clues:
- City near Oberhausen
- City in the Ruhr valley
- German cathedral city
- German iron and steel center
- Steel city of Europe
- Ruhr-al city?
- Krupp's headquarters
- German city near the Belgian border
- Where the Krupps worked
- Home of the Krupp steelworks
- Industrial Ruhr city
- German steel city
- -
- Museum Folkwang setting
- German city on the Ruhr