Lisbon, Lisbon, Portugal
Tirana, Albania
Halle (Saale), Saxony-Anhalt, Germany
Madrid, Community of Madrid, Spain
Greece, Greece
Moscow, Russian Federation
Darmstadt, Hesse, Germany
Modena, Emilia-Romagna, Italy
Saarbrücken, Saarland, Germany
Thessaloniki, Greece
Leipzig, Sachsen, GER
Osnabrück, Germany