There is no 2010 Summer Olympics. The Olympics in 2010 was a Winter Olympics that took place in Vancouver, BC, Canada. The next summer Olympics after the 2010 Winter Olympics is the 2012 Summer Olympics in London.
Mexico City, Mexico hosted the 1968 Summer Olympics.
London, England. London also hosted the 1948 Summer Olympics and is scheduled to host the 2012 Summer Olympics.
Seoul hosted the 1988 Summer Olympic games.
Athens
Montreal
Sydney, Australia was the host city for the 2000 Summer Olympics.
Paris, France.
Tokyo
Barcelona
Barcelona.
There was no Summer Olympics in 1966. 1964 was hosted by Tokyo, Japan and 1968 games were hosted by Mexico City, Mexico.