article: Cologne
links: Cologne (region) North Rhine-Westphalia Roman Empire Hamburg Stone Age Ruhr Düsseldorf Archaeologist United Nations Eau de Cologne Henriette Reker States of Germany Protestants Rhine River Biblical Magi Koeppen climate classification Frankfurt/Main Roman Catholic Kölsch (language) Lord Mayor Church (building) Berlin Carnival East Germany Munich Second World War ARD Bonn Rhine Germany Leverkusen Cologne Cathedral Muslim