Leidschenveen, Zuid-Holland, NL
2008
Madison, Wisconsin, US
2013
Pingzhen District, Taoyuan City, TW
2009
Seward, Nebraska, US
2013
Gothenburg, Västra Götaland County, SE
2010
Berkeley, California, US
2010
Bucharest, Bucharest, RO
2011
Lincoln, England, GB
2011
Manchester, England, GB
2011
U.S. Air Force Academy, Colorado, US
2008