The neat video above, from Facebook, shows how many non-Brazilians travelled to various World Cup cities from June 5th through June 16th. The site's data team built out the graphic using Facebook check-ins; each arc represents 20 people traveling from their home city to a city in Brazil, and the size of the Brazilian bubbles is proportionate to the total number of people who have checked in there.
It's not necessarily illuminating—although the contingents from Southeast Asia and South Africa are sort of unexpected—but it is pretty cool looking.
[Facebook]