Mannheim, Baden-Württemberg
Merzig, Saarland, Germany
Cologne, North Rhine-Westphalia, Germany
Halle (Saale), Saxony-Anhalt, Germany
Karlsruhe, Baden-Wuerttemberg, Germany
Ruppertsberg, Rheinland-Pfalz, Germany
Losheim am See, Saarland, Germany
Karlstad, Varmland, Sweden
Trier, Rhineland-Palatinate, Germany