Serres, Decentralized Administration of Macedonia and Thrace, Greece
Xanthi, East Macedonia and Thrace, Greece
Kavala, Greece
Leeds, United Kingdom of Great Britain and Northern Ireland
Ceske Budejovice, South Bohemian Region, Czechia
Liepāja, Liepājas pilsēta, Latvia
Celje, Savinjska, Slovenia
Ecublens, Canton of Vaud, Switzerland
Kiel, Schleswig-Holstein, Germany
Filoti, Greece
Esbjerg, Denmark
