2022 // Ulm, Germany
2018 // Toronto, Canada
2017 // Nashville, TN, USA
2016 // Suzhou, China
2015 // Pisa, Italy
2014 // Amsterdam, Netherlands
2013 // Jerusalem, Israel
2012 // Oxford, UK
2011 // Fukouka, Japan
2010 // Liverpool, UK
2009 // New York, NY, USA
2008 // Hamburg, Germany
2007 // Sydney, Australia
2006 // Dublin, Ireland
2005 // Rovereto, Italy
2004 // Barcelona, Spain
2003 // Hamilton, Canada
2002 // Geneva, Switzerland
2000 // Tarrytown, NY, USA
1999 // Oxford, UK