Ottignies-Louvain-la-Neuve, Walloon Region, Belgium
Washington, DC, USA
Nieuw Nickerie, Nickerie, Suriname
Berlin, Berlin, Germany
Boulder, CO, USA
Aspen, CO, USA
Neuss, North Rhine-Westphalia, Germany
Wageningen, Gelderland, Netherlands
Ottawa, Ontario, Canada
Barcelona, Catalonia, Spain
Bruxelles, Bruxelles, Belgium
Antwerp, Antwerp, Belgium
