London/ England in Jan-Mar 2004
New York/ U.S.A in Aug-Sep 2004
Sarajevo/ Bosnia and Herzegovina in July 2005
Poznan/ Poland in November 2005
Hokkaido/ Japan in August 2006
Helsinki/ Finland and Tallin/ Estonia in August 2007
La Grott dello Smeraldo di Conca de Marini/ Italy in September 2009
Prerow/ Germany in Januar 2010