Dresden , Sachsen , Germany

Leipzig , Sachsen , Germany

Köln , Nordrhein-Westfalen , Germany

Dillingen , Saarland , Germany

Veneto , Italy

New York , USA

Berkeley , California , USA

Wuppertal , Germany

Poland

Norrbottens , Sweden

Piteå , Norrbottens , Sweden

Toulouse , Midi-Pyrénées , France

Estado de México , Mexico , Mexico

Kiel , Schleswig-Holstein , Germany

Poland

Baden-Württemberg , Germany

Sao Paulo , Brazil

Exeter , New Hampshire , USA

Switzerland

London , United Kingdom