Cologne, North Rhine-Westphalia, Germany
Warsaw, Mazovia, Poland
Wrocław, Województwo dolnośląskie, Poland
Göteborg, Västra Götaland, Sweden
Bydgoszcz, Kujawy-Pomerania, Poland
Münster, North Rhine-Westphalia, Germany
Lisboa, Estremadura, Portugal
Gliwice, Silesian Voivodeship, Poland
Zabrze, Silesian Voivodeship, Poland
Krakow, Lesser Poland, Poland
Jastrzebie Zdroj, Silesia, Poland