Cologne is the fourth most populous city in Germany after Berlin, Hamburg, and Munich. Situated on the left bank of the Rhine, the city is known for Cologne Cathedral (Kölner Dom) that is the seat of the Catholic Archbishop of Cologne. As an education hub not only in Germany but also in Europe, the city has famous educational institutes as the University of Cologne, one of Europe's oldest and largest universities, the Technical University of Cologne, Germany's largest university of applied sciences, and the German Sport University Cologne (Deutsche Sporthochschule Köln).
In Middle Ages Cologne flourished on one of the most important major trade routes between east and west in Europe. The largest city in the Rhine-Ruhr metropolitan region, Cologne get dividends from a large market structure.
The Cologne has derived its business primarily from the insurance and media industries. Some of the largest companies in Cologne are Westdeutscher Rundfunk, RTL Television (with subsidiaries), n-tv, Deutschlandradio, Brainpool TV and publishing houses like J. P. Bachem, Taschen, Tandem Verlag, and M. DuMont Schauberg.
Cologne is showing up a great trend of rise in startup companies primarily into the digital business.