what part of germany is koln located?
<answer> Köln is located at the Rhine river in southwestern North Rhine-Westphalia state, in central western Germany. <context> About Cologne Satellite view of Köln (Cologne), Germany's oldest city. Cologne is since centuries a key inland port in Europe. It is the largest city in the western part of Germany and the fourth largest city in the country. Köln is located at the Rhine river in southwestern North Rhine-Westphalia state (Bundesland), in central western Germany.