Trossingen, Baden-Württemberg, Germany
Irkutsk, Irkutsk, Russian Federation
Wels, Austria
Kaohsiung City, Taiwan, Republic Of China
Ottawa, Ontario, Canada
Lyon, Rhone-Alpes, France
Chiavenna, Lombardy, Italy
Santa Coloma de Queralt, Catalunya, Spain
Frankfurt am Main, Hessen, Germany
Weiningen, Zürich, Switzerland
Lier, Antwerp, Belgium