Boulder, CO, USA
Saint-Imier, Bern, Switzerland
San Jose, CA, USA
Vienna, Vienna, Austria
ciudad del carmen, campeche, Mexico
Lingen (Ems), Niedersachsen, Germany
Lowell, MA, USA
Healdsburg, CA, USA
Norderstedt, Schleswig-Holstein, Germany
Herdecke, Nordrheinwestfalen, Germany
Rothenburg ob der Tauber , Bavaria, Germany
Wien, Wien, Austria
