Gliwice, Silesia, Poland
Gothenburg, Vastra Gotaland, Sweden
Madrid, Community of Madrid, Spain
Mexico City, Distrito Federal, Mexico
Zabrze, Silesia, Poland
Berlin, Berlin, Germany
Wroclaw, Lower Silesia, Poland
Chorzów, śląskie, Poland
București, Municipiul București, Romania
Zürich, Zurich, Switzerland
Sävedalen, Västra Götaland, Sweden
