four
Wembley stadium
Venues.
Tokyo in 1940 and London in 1944.
The 2010 summer Olympics are in London , England in 2012.
There are no summer Olympics in 2010, they are in London in 2012.
It is predicted that property values in East London near the Olypmic venues will increase.
The 2012 Olympics will be held at several venues across Greater London.
34 venues
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.