San Francisco, CA, USA
Recife, Pernambuco, Brazil
Rennes, Bretagne, France
Meissen, Saxony, Germany
Tunja, Boyaca, Colombia
Oberhausen, North Rhine-Westphalia, Germany
Gent, Oost-Vlaanderen, Belgium
Mittweida, Saxony, Germany
Leipzig, Saxony, Germany
Newark, CA, USA
Los Altos, CA, USA
Palo Alto, CA, USA