Bochum, NRW, Germany
Cologne, North Rhine-Westphalia, Germany
Maastricht, Limburg, Netherlands
Duisburg, North Rhine-Westphalia, Germany
Taipei, Taipei, Taiwan, Province of China
Duisburg, Nordrhein-Westfalen, Germany
Rio de Janeiro, Rio de Janeiro, Brazil
Edmonton, Alberta, Canada
Worms, Rhineland-Palatinate, Germany
Ponta Delgada, Portugal
Berlin, Germany
