Maastricht, Limburg, Netherlands
Ufa, Republic of Bashkortostan, Russian Federation
Siegen, Nordrhein-Westfalen, Germany
Wiesbaden, Hessen, Germany
Cologne, North Rhine-Westphalia, Germany
Siegen, North Rhine-Westphalia, Germany
Abingdon, England, United Kingdom of Great Britain and Northern Ireland
Zürich, Zurich, Switzerland
Kidlington, Kidlington, United Kingdom