Cologne (region)

Cologne ( ; ; ) is the fourth-most populous city of Germany and the largest city of the German state of North Rhine-Westphalia with nearly 1.1 million inhabitants in the city proper and over 3.1 million people in the Cologne Bonn urban region. Cologne is also part of the Rhine-Ruhr metropolitan region, the second biggest metropolitan region by GDP in the European Union. Centered on the left bank of the Rhine, Cologne is located on the River Rhine (Lower Rhine), about southeast of the North Rhine-Westphalia state capital Düsseldorf and northwest of Bonn, the former capital of West Germany.

Bonn, () officially the Federal City of Bonn, () is a federal city in the German state of North Rhine-Westphalia, located on the banks of the Rhine. With a population exceeding 300,000, it lies about south-southeast of Cologne, in the southernmost part of the Rhine-Ruhr region.

Leverkusen () is a city in North Rhine-Westphalia, Germany, on the eastern bank of the Rhine. To the south, Leverkusen borders the city of Cologne, and to the north the state capital, Düsseldorf. The city is part of the Rhine-Ruhr Metropolitan Region, one of Europe's largest urban areas.

German district of North Rhine-Westphalia

German district of North Rhine-Westphalia

government region of North Rhine-Westphalia, Germany

The Rhein-Sieg-Kreis () is a Kreis (district) in the south of North Rhine-Westphalia, Germany. Neighboring districts are Rheinisch-Bergischer Kreis, Oberbergischer Kreis, Altenkirchen, Neuwied, Ahrweiler, Euskirchen, Rhein-Erft-Kreis, the urban district of Cologne. The federal city of Bonn is nearly completely surrounded by the district.

district in North Rhine-Westphalia, Germany

district of North Rhine-Westphalia, Germany

The Rhein-Erft-Kreis () is a district in the west of North Rhine-Westphalia, Germany. Neighboring districts are Neuss, district-free Cologne, Rhein-Sieg, Euskirchen, Düren.

district in North Rhine-Westphalia, Germany

Alfter (; ) is a municipality in the Rhein-Sieg district, in North Rhine-Westphalia, Germany. It is situated approximately 6 km west of Bonn.

German district of North Rhine-Westphalia