Katowice, Silesia, Poland
Brescia, Lombardia, Italy
Wrocław, Lower Silesian Voivodeship, Poland
Nijmegen, Gelderland, Netherlands
Saint Louis/Basel, France
Opole, Opole, Poland
Helsinki, Finland
Pobiedziska, Greater Poland, Poland
Gdynia, Pomeranian Voivodeship, Poland
Gliwice, śląskie, Poland