Oakland , California , USA

Bischofsheim , Hessen , Germany

Denmark

Baden-Württemberg , Germany

Quebec , Canada

Moscow , Russia

Tampere , Finland

Jülich , Nordrhein-Westfalen , Germany

Cherry Hill , New Jersey , USA

Edmonton , Alberta , Canada

Öxabäck , Vastra Gotalands , Sweden

Praha , Czech Republic

Göteborg , Vastra Gotalands , Sweden

Netherlands

Texas , USA

Berkeley , California , USA

København , Denmark

Bonn , Germany

Columbus , Ohio , USA

Illinois , USA