Düsseldorf: Cosmopolitan city break destination with diverse tourist attractions Düsseldorf on the banks of the Rhine is the capital city of North Rhine-Westphalia, Germany’s most populous state. Recognised for its high quality of life (ranking fifth worldwide, Mercer 2011), the city scores with excellent infrastructure, modern architecture, tradition and cultural attractions of international distinction. The tolerance and cosmopolitan nature of the city are evidenced in great friendliness towa