Future & Past Congresses
| 2013 | Istanbul | TURKEY |
| 2012 | Hong Kong SAR | CHINA |
| 2011 | Mexico City | MEXICO |
| Salvador | BRAZIL | |
| Singapore | SINGAPORE | |
| Stockholm | SWEDEN | |
| Dubai | UNITED ARAB EMIRATES | |
| Shenzhen | CHINA | |
| Montreal | CANADA | |
| New Delhi | INDIA | |
| 2003 | Sydney | AUSTRALIA |
| Vienna | AUSTRIA | |
| Kuala Lumpur | MALAYSIA | |
| Paris | FRANCE | |
| Mexico City | MEXICO | |
| 1998 | Barcelona | SPAIN |
| Seoul | KOREA | |
| Orlando | USA | |
| Hong Kong | HONG KONG | |
| Vancouver | CANADA | |
| Gothenburg | SWEDEN | |
| 1992 | Berlin | GERMANY |
| 1991 | Milan | ITALY |
| 1990 | Singapore | SINGAPORE |
| 1989 | Amsterdam | NETHERLANDS |
| 1988 | Washington | USA |
| 1987 | Buenos Aires | ARGENTINA |
| 1986 | Manila | PHILIPPINES |
| 1985 | Belgrade | YUGOSLAVIA |
| 1984 | Helsinki | FINLAND |
| 1983 | Tokyo | JAPAN |
| 1982 | Vienna | AUSTRIA |
| 1981 | Rio de Janeiro | BRAZIL |
| 1980 | Hamburg | GERMANY |
| 1979 | Paris | FRANCE |
| 1978 | Madrid | SPAIN |
| 1977 | Toronto | CANADA |
| 1976 | Athens | GREECE |
| 1975 | Chicago | USA |
| 1974 | London | UK |
| 1973 | Sydney | AUSTRALIA |
| 1972 | Mexico City | MEXICO |
| 1971 | Munich | GERMANY |
| 1970 | Bucharest | ROMANIA |
| 1969 | New York | USA |
| 1968 | Varna | BULGARIA |
| 1967 | Paris | FRANCE |
| 1966 | Tel Aviv | ISRAEL |
| 1965 | Vienna | AUSTRIA |
| 1964 | San Francisco | USA |
| 1963 | Stockholm | SWEDEN |
| 1962 | Cologne | GERMANY |
| 1961 | Helsinki | FINLAND |
| 1960 | Dublin | IRELAND |
| 1959 | New York | USA |
| 1958 | Brussels | BELGIUM |
| 1957 | Rome | ITALY |
| 1956 | Zurich | SWITZERLAND |
| 1955 | Copenhagen | DENMARK |
| 1954 | Scheveningen | NETHERLANDS |
| 1953 | Oslo | NORWAY |
| 1952 | London | UK |
| 1951 | Brussels | BELGIUM |
| 1950 | Paris | FRANCE |
| 1949 | Milan | ITALY |
| 1948 | Dublin | IRELAND |
| 1947 | Boston | USA |
| 1946 | Paris | FRANCE |
| 1939 | Zurich | SWITZERLAND |
| 1938 | Paris | FRANCE |
| 1937 | Stockholm | SWEDEN |
| 1936 | Vienna | AUSTRIA |
| 1935 | Brussels | BELGIUM |
| 1934 | Como | ITALY |
| 1933 | Edinburgh | UK |
| 1932 | Zurich | SWITZERLAND |
| 1931 | Paris | FRANCE |
| 1930 | Brussels | BELGIUM |
| 1929 | Utrecht | NETHERLANDS |
| 1928 | Cologne | GERMANY |
| 1927 | Copenhagen | DENMARK |
| 1926 | Philadelphia | USA |
| 1925 | Geneva | SWITZERLAND |
| 1924 | Luxembourg | LUXEMBOURG |
| 1923 | Paris | FRANCE |
| 1922 | Madrid | SPAIN |
| 1921 | The Hague | NETHERLANDS |
| 1914 | London | UK |
| 1913 | The Hague | NETHERLANDS |
| 1912 | Stockholm | SWEDEN |
| 1911 | London | UK |
| 1910 | Paris | FRANCE |
| 1909 | Berlin | GERMANY |
| 1908 | Brussels | BELGIUM |
| 1907 | Amsterdam | NETHERLANDS |
| 1906 | Geneva | SWITZERLAND |
| 1905 | Hanover | GERMANY |
| 1904 | St. Louis | USA |
| 1903 | Madrid | SPAIN |
| 1902 | Stockholm | SWEDEN |
| 1901 | London | UK |