Düsseldorf, Nordrhein-Westfalen, Germany
Tres Cantos, Comunidad de Madrid, Spain
Leiden, Zuid-Holland, Netherlands
Cajicá, Cundinamarca, Colombia
Azumino-shi, Nagano-ken, Japan
Lyon, Auvergne-Rhône-Alpes, France
Spijkenisse, Zuid-Holland, Netherlands
Tres Cantos, Madrid, Spain
Sydney, New South Wales, Australia
Japan
Paris, Île-de-France, France
