Opole, Opole, Poland
Salamanca, Castile and Leon, Spain
Lisboa, Lisboa, Portugal
Wrocław, Województwo dolnośląskie, Poland
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Hamburg, Hamburg, Germany
Thessaloniki, Central Macedonia, Greece
Athens, Attica, Greece
Frankfurt am Main, Hessen, Germany
