Let me share with you a report prepared by PwC on infrastructure opportunities originated by mega sports events.The report mentions several future examples:

London, meanwhile, expects to spend some $15 billion for the Olympic Park under construction in East  London  and the regeneration of the entire region, including transportation, bridges, utilities, and walkways.

Brazil is probably the best example in the near future:

Brazil, for example, is expected to invest some $83 billion in infrastructure from 2009 to 2016 to prepare for World Cup football in 2014 and the Olympics in 2016.

But Russia is just there:

Meanwhile, in Sochi, Russia, site of the 2014 Winter Olympics, the Russian government is actively soliciting participation in publicprivate partnerships. City and regional planners expect the Games to transform both Sochi and the Krasnodar region in southern Russia, 1,000 miles south of Moscow, into a state-of-the-art year-round resort.Russia is also planning ahead for 16 stadia across 13 cities in anticipation of World Cup football in 2018. Much of the massive infrastructure investment required for this event-4,800 miles of roadway and 1,200 miles of railroad-will occur outside Russia's main cities of Moscow and St. Petersburg, where almost none of the infrastructure currently exists.

You can also view it here: