Cologne is a vibrant metropolis on the Rhine River, known for its rich history and diverse architectural styles.

Leverkusen is a vibrant, urban municipality situated in the North Rhine-Westphalia region of Germany.

Bergisch Gladbach is a city located in the state of North Rhine-Westphalia, Germany.

Bonn is a city on the banks of the Rhine River in the German state of North Rhine-Westphalia.

Solingen, also known as the 'city of blades', is well known for its knife and sword manufacturing industry.

Remscheid is known for its toolmaking and mechanical engineering industries.

Düsseldorf is a major cultural and economic hub, with an influential arts scene and numerous international corporations.

Neuss is a district capital and large district town located within the Rhein-Kreis Neuss.

Wuppertal is a city located in western Germany, well-known for its steep slopes and woods.

Mönchengladbach is an urban municipality in Germany.