Visit the main station in Cologne, Germany for intensive passenger train service under the superb arched glass roof. Lots of ICE trains of both styles, plus electric hauled intercity and local services, both emu's and dmu's and a diesel hauled passenger train. Then it's off to trackside to see trains at speed, then we visit busy Cologne West for passenger and freight trains, both electric and diesel, with a variety of different power and operators.