Possible Clues:

• Sounds as if one is beginning to sneeze in Germany
• European Capital of Culture for 2010
• In Germany the pound needs it to fall in value
• City said to symbolise tin
• Monster drops one, going back to German city
• City SSW of Münster
• Industrial city of northwest Germany
• German Pittsburgh
• Nordrhein-Westfalen city
• Ruhr Museum locale