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. It is one of the oldest cities in Germany, having been founded by the Ubii in the year 38 BC. The name is derived from that of the Roman settlement,Colonia Claudia Ara Agrippinensium.
Cologne is located on both sides of the Rhine River. The city's famous Cologne Cathedral (Kölner Dom) is the seat of the CatholicArchbishop of Cologne. The University of Cologne (Universität zu Köln) is one of Europe's oldest universities. Dont forget to climb the bell tower of the Dom.