San Francisco, CA, USA
Flensburg, Schleswig-Holstein, Germany
San Cristóbal de La Laguna, Canary Islands, Spain
Arcata, CA, United States
Köln, Nordrhein-Westfalen, Germany
Düsseldorf, North Rhine-Westphalia, Germany
Rotterdam, Zuid-Holland, Netherlands
Baden-Württemberg, Germany
Hamburg, Hamburg, Germany
Passau, Bavaria, Germany
Velbert, North Rhine-Westphalia, Germany
Bonn, North Rhine-Westphalia, Germany
