Duisburg, North Rhine-Westphalia, Germany
Prague, Prague, Czechia
Aachen, North Rhine-Westphalia, Germany
Heidelberg, Baden-Württemberg, Germany
Gliwice, Silesian Voivodeship, Poland
Krško, Krško, Slovenia
Madrid, Spain
Sofia, Sofia, Bulgaria
Białystok, Podlaskie Voivodeship, Poland
Lviv, Lviv, Ukraine
London, England, United Kingdom