Colônia (Köln, in German) and Düsseldorf are about 40 km apart, both on the banks of the Reno, in the state of Renânia do Norte-Vestfália, in western Germany. Regional trains and the ICE connect the two main stations in under half an hour, which lets you use one city as a base and visit the other on the same day.
Colônia was founded by the Romans and preserves that heritage in museums and sections of the old wall. The center revolves around the Kölner Dom, the Gothic cathedral that began to be built in 1248 and was only completed in 1880, next to the central station. From there you can walk to the Hohenzollernbrücke, the Alter Markt, the Romanesque church Groß St. Martin and the Museum Ludwig, with modern art and pop art.
Düsseldorf is the state capital. The Altstadt, the old town, brings together hundreds of bars and breweries near the river; the Rheinuferpromenade runs along the bank to the Rheinturm and the MedienHafen, with buildings by Frank Gehry. The Königsallee, the Kö, is the shopping boulevard with a canal in the middle, and the museums K20, K21 and Kunstpalast show art from the 20th century to the present.
The two cities have a long, good-humored rivalry that shows up in the beer: in Colônia people drink Kölsch, a pale beer, in thin 0.2‑liter glasses; in Düsseldorf, Altbier, a dark beer. Carnival is also big in both, with the peak in the week before Ash Wednesday.
This destination brings together 2 cities: Colônia, Düsseldorf.