Cologne, North Rhine-Westphalia, Germany
Stockholm, Stockholm, Sweden
Erftstadt, North Rhine-Westphalia, Germany
Homburg, Saarland, Germany
Munich, Bavaria, Germany
Köln, Nordrhein-Westfalen, Germany
Albertslund, Capital Region of Denmark, Denmark
Maastricht, Limburg, Netherlands
Montreal, Quebec, Canada
Buenos Aires, Autonomous City of Buenos Aires, Argentina
Hamburg, Hamburg, Germany