Expo

A world's fair, world fair, world exposition or universal exposition (sometimes spelled expo for short) is a large public exhibition.
These exhibitions vary in character and are held in varying parts of the world.
The next world's fair will be Expo 2015 in Milan, Italy.
Since the entering into force of the 1928 Convention Relating to International Exhibitions, the Bureau International des Expositions (BIE; English: International Exhibitions Bureau) has served as an international sanctioning body for world's fairs.
BIE-approved fairs are of three types: universal, international, and specialized.
They usually last from three weeks to six months.

List of Expo's:

• 1851 London (United Kingdom and Ireland)
• 1853 New York (United States)
• 1855 Paris (France)
• 1862 London (United Kingdom and Ireland)
• 1865 Porto (Portugal)
• 1867 Paris (France)
• 1873 Vienna (Austria–Hungary)
• 1876 Philadelphia (United States)
• 1878 Paris (France)
• 1879 Sydney (New South Wales, British Australia)
• 1880 Melbourne (Victoria, British Australia)
• 1884 New Orleans (United States)
• 1885 Antwerp (Belgium)
• 1888 Barcelona (Spain)
• 1889 Paris (France)
• 1893 Chicago (United States)
• 1897 Brussels (Belgium)
• 1898 Omaha (United States)
• 1900 Paris (France)
• 1901 Buffalo (United States)
• 1904 St. Louis (United States)
• 1905 Liège (Belgium)
• 1906 Milan (Italy)
• 1907 Dublin (United Kingdom and Ireland)
• 1907 Norfolk (United States)
• 1909 Seattle (United States)
• 1910 Brussels (Belgium)
• 1911 Turin (Italy)
• 1913 Ghent (Belgium)
• 1915 San Francisco (United States)
• 1915 San Diego (United States)
• 1922-1923 Rio de Janeiro (Brazil)
• 1929 Seville (Spain)
• 1929 Barcelona (Spain)
• 1930 Liège (Belgium)
• 1930 Antwerp (Belgium)
• 1933-1934 Chicago (United States)
• 1935 Brussels (Belgium)
• 1937 Paris (France)
• 1939 New York City (United States)
• 1939 Liège Exposition Internationale (Belgium)
• 1939–1940 San Francisco (United States)
• 1958 Brussels (Belgium)
• 1962 Seattle (United States)
• 1964/1965 New York (United States)
• 1967 Montreal (Canada)
• 1968 San Antonio (United States)
• 1970 Osaka (Japan)
• 1974 Spokane (United States)
• 1975 Naha (Japan)
• 1982 Knoxville (United States)
• 1984 New Orleans (United States)
• 1985 Tsukuba (Japan)
• 1986 Vancouver (Canada)
• 1988 Brisbane (Australia)
• 1992 Seville (Spain)
• 1992 Genoa (Italy)
• 1993 Daejeon (South Korea)
• 1998 Lisbon (Portugal)
• 2000 Hannover (Germany)
• 2005 Aichi (Japan)
• 2008 Zaragoza (Spain)
• 2010 Shanghai (China)
• 2012 Yeosu (South Korea)
• 2015 Milan (Italy)
• 2017 Astana (Kazakhstan)
• 2020 Dubai (United Arab Emirates)