Ottignies-Louvain-la-Neuve, Brabant Walloon, Belgium
Goettingen, Lower Saxony, Germany
Vienna, Vienna, Austria
Lisboa, Lisboa, Portugal
Guarda, Guarda, Portugal
Aveiro, Aveiro, Portugal
Porto, Porto, Portugal
Edinburgh, Edinburgh, Scotland
Nuremberg, Bavaria, Germany
Luebeck, Schleswig-Holstein, Germany
Montreal, Quebec, Canada