Cologne the Central Franconian and Ripuarian dialect areas. The city's famous Cologne Cathedral ("Kölner Dom") is the seat of the Catholic Archbishop of Cologne. There are many institutions of higher education in the city, most notably the University of Cologne ("Universität zu Köln"), one of Europe's oldest and largest universities, the Technical University of Cologne ("Technische Hochschule Köln"), Germany's largest university of applied sciences, and the German Sport University Cologne ("Deutsche Sporthochschule Köln"), Germany's only sport university. Cologne Bonn Airport ("Flughafen Köln/Bonn") is Germany's seventh-largest airport and lies in the southeast of the city. The main airport for the Rhine-Ruhr region
History of Cologne In 1074 the commune was formed. By the 13th century, the relationship between the city and its archbishop had become difficult, and after the Battle of Worringen in 1288, the forces of Brabant and the citizenry of Cologne captured Archbishop Siegfried of Westerburg (1274–97), resulting in almost complete freedom for the city. To regain his liberty the archbishop recognized the political independence of Cologne but reserved certain rights, notably the administration of justice. Cologne effectively became a free city after 1288, and in 1475 it was formally made a free imperial city, a status that it held until annexed by