1900 SCANDINAVIA AND EUROPE:
Stockholm, Oslo, Göteborg, Malmö, Copenhagen, Lybeck, Hamburg, Berlin, Amsterdam, Haag, Rotterdam, Bryssel, Paris

1934 GREAT BRITAIN:
London, Hull

1936 SWEDEN:
Stockholm

1960 SWITZERLAND AND GERMANY:
Basel, Bern, Zürich, Bad Godesberg, Hamburg

1965 SCANDINAVIA, EUROPE AND SOVIET UNION:
Århus, London, Amsterdam, Wien, München, Prague, Warsaw, Leningrad, Budapest, Leipzig, Lybeck, Copenhagen, Stockholm, Oslo

1968 USA:
Framingham, Manchester, Portland, Bangor, Lewiston, Wilmington, Washington, Atlantic City, Garden City, South Hadley, Plainfield, New York, Brooklyn, Freeport, Schenectady, Hamilton, Elyria, Trenton, Ann Arbor, Port Huron, Midland, Muskegon, Kalamazoo, Highland Park, Waukegan, Beverly Hills, Glen Ellyn, Wauwatosa, Alton, East St.Louis, Springfield, Manhattan, Topeka, Great Bend, Roswell, Tucson, Tempe, Riverside, Thousand Oaks, Newport Beach, Los Angeles, Fresno, Richmond, Redding, Eureka, Portland, Astoria, Seattle

1974 AUSTRIA:
Linz

1976 SWEDEN:
Stockholm

1978 CZECHOSLOVAKIA:
Prague

1980 SCANDINAVIA:
Stockholm, Oslo

1982 JAPAN:
Ayase, Tokio, Koriyama, Asahikawa, Sapporo, Fukuoka, Matsuyama, Kochi, Otsu, Wakayama, Osaka, Kioto, Nagoja, Yokohama

1983 USA:
Yakima, Eugene, Corvallis, Portland, Medford, Hayward, Sacramento, San José, Bakersfield, Santa Barbara, Torrance, Riverside, Las Vegas, Tuscon, Sun City, Los Angeles, Palm Springs

1984 IRELAND AND GREAT BRITAIN:
Dublin, Reading, Skegness, Eastbourne, Northampton, Middlesbrough, Leeds, London, Cardiff

1985 SOVIET UNION:
Tallinn, Leningrad, Moscow

1986 USA:
Greenvale, Princeton, New Bredford, Albany, Hershey, Stony Brook, Bay Shore, Worcester, New York

1987 SWITZERLAND, AUSTRIA AND GERMANY:
Bad Homburg, Schweinfurt, Ingoldstadt, Salzburg, Linz, Villach, Nürnberg, Fürth, Frankfurt, Leverkusen, Zürich, Bern, Lausanne, Genève, St.Gallen, Stuttgart

1987 GERMANY:
Berlin

1988 JAPAN: Tokyo, Matsumoto, Nagano, Osaka, Okayama, Hakata, Isahaya

1990 GREAT BRITAIN:
Sheffield, Hull, Middlesbrough, London, Northampton, Eastbourne, Brighton, Inverness, Stirling

1992 ITALY AND AUSTRIA:
Modena, Salzburg, Wien

1993 LATVIA AND ESTONIA:
Riga, Tallinn

1994 AUSTRIA AND SLOVAK REPUBLIC: Wien, Bratislava

1995 RUSSIA:
St.Petersburg

1995 GREAT BRITAIN:
Bristol, Northampton, London, Birmingham, Leicester, Middlesbrough, Newcastle-upon-Tyne

1996 JAPAN:
Tokyo, Yamagata, Akita, Sendai, Tsukuba, Hitachi-Ota, Matsudo, Oita, Fukuoka, Nagoya, Osaka, Shizuoka, Kimitsu, Tokio

1997 ESTONIA:
Tallinn

1997 RUSSIA:
Moscow

1998 SPAIN / Canary Islands:
Las Palmas, Santa Cruz

1998 GREAT BRITAIN AND FRANCE:
Newcastle, Birmingham, Bristol, Northampton, Paris

1999 AUSTRIA, SWITZERLAND AND GERMANY:
Wien, Zürich, Freiburg, Stuttgart, Friedrichshafen, Düsseldorf, Cologne (Köln), Wilhelmshaven, Hannover