Beirut, Lebanon
Cambridge, MA, United States
Hamilton, Ontario, Canada
Marburg, Hessen, Germany
Tuebingen, Baden-Wuerttemberg, Germany
Ottawa, Ontario, Canada
San Francisco, CA, USA
Gyeongsan, Gyeongsangbuk-do, Korea (Republic of)
Kiel, Schleswig-Holstein, Germany
Hsinchu, Hsinchu, Taiwan
Parksville, British Columbia, Canada
Frankfurt am Main, Hessen, Germany