Halle (Saale), Saxony Anhalt, Germany
Stolberg (Rhineland), North Rhine-Westphalia, Germany
London, England, United Kingdom of Great Britain and Northern Ireland
Berlin, Berlin, Germany
Menlo Park, CA, USA
Cologne, North Rhine-Westphalia, Germany
Germany
Bremen, Bremen, Germany
Hamburg, Hamburg, Germany
Freiburg, Germany
lüneburg, niedersachsen, Germany