Flateyri, Westfjords, IS
2007
Ann Arbor, Michigan, US
2007
St Petersburg, Florida, US
2007
Pittsburgh, Pennsylvania, US
2007
Campbell River, British Columbia, CA
2007
Boston, Massachusetts, US
2007
Colorado, Colorado, US
2007
Melbourne, Victoria, AU
2008
Cartago, Cartago, CR
2008
Ontario, Ontario, CA
2008
Buffalo, New York, US
2007
Virginia Beach, Virginia, US
2008
Chicago, Illinois, US
2008
Ireland, Indiana, US
2008
Portugal Cove-St. Philip's, Newfoundland and Labrador, CA
2008
Oklahoma City, Oklahoma, US
2008
Lüneburg, Lower Saxony, DE
2008
Cleveland, Georgia, US
2008
Township of Hamburg, Michigan, US
2008
Catania, Sicilia, IT
2008
Indiana, Pennsylvania, US
2008
Hot Springs, North Carolina, US
2008
Portugal Cove-St. Philip's, Newfoundland and Labrador, CA
2008
Seattle, Washington, US
2008
Kissimmee, Florida, US
2008
Richmond, Virginia, US
2008
Finland, Minnesota, US
2008
North Lauderdale, Florida, US
2008
Wheaton, Illinois, US
2008
Palermo, Sicilia, IT
2008
Fort Wayne, Indiana, US
2008
Chihuahua, Chihuahua, MX
2007
Frankfurt, Hesse, DE
2009
Sarajevo, Federation of Bosnia and Herzegovina, BA
2009
U.S. Air Force Academy, Colorado, US
2009
Dunakeszi, Pest County, HU
2009
Melbourne, Victoria, AU
2009
Amsterdam, North Holland, NL
2009
Bergamo, Lombardy, IT
2009
Brașov, Brașov County, RO
2009
U.S. Air Force Academy, Colorado, US
2009
Winnipeg, Manitoba, CA
2009
La Cañada Flintridge, California, US
2009
Pittsburg, Kansas, US
2009
Ensenada, Baja California, MX
2008
Coombabah, Queensland, AU
2009
Carthage, Missouri, US
2009
Stoke-on-Trent, England, GB
2009
Detroit, Michigan, US
2009
Apache Junction, Arizona, US
2008
Mexico City, Federal District, MX
2008
Biggleswade, England, GB
2010
Bristol, England, GB
2010
Southampton, England, GB
2010
Temerin, Vojvodina, RS
2009
Wuppertal, North Rhine-Westphalia, DE
2009
Orangeville, Pennsylvania, US
2010
Everett, Washington, US
2009
Douglasville, Georgia, US
2010
Philippine, Zeeland, NL
2010
Nottingham, England, GB
2010
Brookings, South Dakota, US
2010
Salt Lake City, Utah, US
2010
Wausau, Wisconsin, US
2010
Oak Harbor, Washington, US
2010
Clarkefield, Victoria, AU
2010
Avondale, Arizona, US
2010
Williamsport, Pennsylvania, US
2010
U.S. Air Force Academy, Colorado, US
2010
Bakersfield, California, US
2010
Gateshead, England, GB
2010
Chicopee, Massachusetts, US
2011
Reggio Calabria, Calabria, IT
2010
Inverness Highlands North, Florida, US
2011
Sophia, North Carolina, US
2011
Pietrasanta, Toscana, IT
2011
Minneapolis, Minnesota, US
2010
Gatineau, Quebec, CA
2011
Cupra Marittima, Marche, IT
2010
Winston-Salem, North Carolina, US
2011
Bristol, England, GB
2011
Umeå, Västerbotten County, SE
2011
Ankara, Ankara Province, TR
2011
San Francisco, California, US
2010
Konstanz, Baden-Württemberg, DE
2009
Milton Keynes, England, GB
2011
San Francisco, California, US
2011
Andover, Minnesota, US
2011
Statesboro, Georgia, US
2011
Norrköping, Östergötland County, SE
2011
Seattle, Washington, US
2011
Mayagüez, Mayagüez, PR
2011
Chandigarh, Chandigarh, IN
2011
Waikanae, Wellington, NZ
2011
Bendigo, Victoria, AU
2010
Middleburg, Florida, US
2012
Kuala Lumpur, Federal Territory of Kuala Lumpur, MY
2012
Stuttgart, Arkansas, US
2012
Toronto, Ontario, CA
2011
Bilbao, Basque Country, ES
2013
Pershore, England, GB
2013
Érd, Pest County, HU
2011
Melfort, Saskatchewan, CA
2013
Sebring, Florida, US
2013
Rockmart, Georgia, US
2014
Halifax, Nova Scotia, CA
2016
Kirkkonummi, Uusimaa, FI
2018