The Rhineland city of Cologne is, of course, famous for its cathedral, but it can also boast a chocolate museum, art galleries and a number of superb Romanesque churches. Further downstream, in Düsseldorf, capital of North Rhine Westphalia, you can discover new buildings created by the greatest architects in the world, such as Frank Gehry. Duisburg, another major city, lies at the confluence of the Rhine and the Ruhr and is the biggest river port in Europe. A few miles across the German-Dutch border, you will arrive in Arnhem, capital of the province of Gelderland.
