Rostock, Mecklenburg-Vorpommern, Germany
Grenoble, Auvergne-Rhône-Alpes, France
Berlin, Berlin, Germany
Hamburg, Hamburg, Germany
Warsaw, Mazovia, Poland
Milano, Lombardia, Italy
Potsdam, Brandenburg, Germany
Prague, Prague, Czech Republic
Washington, DC, USA
Saskatoon, Saskatchewan, Canada
Oslo, Oslo, Norway