Brussels, Brussels, Belgium
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece
Xanthi, Decentralized Administration of Macedonia and Thrace, Greece
Würzburg, Bavaria, Germany
Zürich, Zurich, Switzerland
Bergamo, Lombardia, Italy
Volos, Thessalia Sterea Ellada, Greece
Thessaloniki, Central Macedonia, Greece
Berlin, Berlin, Germany
Bonn, Nordrhein-Westfalen, Germany