Billions of dollars are spent by cities and countries to prepare for summer and winter Olympics.  Many stadiums, housing and other infrastructure are built to not only be able to handle the games, but also the enormous amount of people that will eventually inhabit the city for a few weeks.  But, that’s just it, it’s only for a few weeks.  What happens after the games are over and there’s no longer a need for an International Broadcast Center or a handball venue?  In the past, the answer has been to let the area rot away and be a hotbed of vandalism, but Rio has taken a different approach.