Strasbourg, Alsace-Champagne-Ardenne-Lorraine, France
Buenos Aires, Autonomous City of Buenos Aires, Argentina
Tönisvorst, North Rhine-Westphalia, Germany
Krefeld, North Rhine-Westphalia, Germany
Hamburg, Hamburg, Germany
Zurich, Zurich, Switzerland
Berlin, Berlin, Germany
Mannheim, Baden-Württemberg, Germany
Cologne, North Rhine-Westphalia, Germany
Copenhagen, Capital Region of Denmark, Denmark
Stuttgart, Baden-Württemberg, Germany