Neuss is a city in North Rhine-Westphalia, Germany. It is located on the west bank of the Rhine opposite Düsseldorf. Neuss is the largest city within the Rhein-Kreis Neuss district. It is primarily known for its historic Roman sites, as well as the annual Neusser Bürger-Schützenfest. Neuss and Trier share the title of "Germany's oldest city"; and in 1984 Neuss celebrated the 2000th anniversary of its founding in 16 BCE.

Düsseldorf is the capital city of North Rhine-Westphalia, the most populous state of Germany. It is the second-largest city in the state after Cologne, and the seventh-largest city in Germany, with a 2022 population of 629,047.