Porto, Porto District, Portugal
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece
Blagoevgrad, Blagoevgrad Province, Bulgaria
Koper, Koper, Slovenia
Münster, North Rhine-Westphalia, Germany
Campania, Italy
Matera, Basilicata, Italy
Sakarya, Serdivan, Turkey
Cagliari, Sardinia, Italy
Skopje, Greater Skopje, Macedonia (the former Yugoslav Republic of)
Trikala, Thessalia Sterea Ellada, Greece
Kaunas, Kaunas County, Lithuania
