About the area:
Cologne is Germany's fourth-largest city (after Berlin, Hamburg and Munich), and is the largest city both in the German Federal State of North Rhine-Westphalia and within the Rhine-Ruhr Metropolitan Area, one of the major European metropolitan areas with more than ten million inhabitants. It is one of the oldest cities in Germany, having been founded by the Romans in the year 38 BC.
Cologne lies on the River Rhine. The city's famous Cologne Cathedral (Kölner Dom) is the seat of the Roman Catholic Archbishop of Cologne. The University of Cologne (Universität zu Köln) is one of Europe's oldest universities.