With the roughly 10,500 participants converging on Brazil for the first Summer Olympics held in South America, the games figure to be remembered for jaw-dropping athletic feats.
And some things that have nothing to do with sports.
The Zika virus. Water pollution. Body parts washing ashore. Crime. The controversial mix outside the competitive venues is murkier than the Olympic bidding process.
Rest assured, good or bad, these Olympics won't be forgotten.
We look at 10 reasons why.
