These aren't meant to be a perfect, professional project - if I got paid for doing this, they would be much nicer and would not feature pictures stolen from Pinterest. Instead, they're a list of things that interested me when reading about what to do and see in the hosts cities and their surrounding areas, arranged to work with the game schedule. If you decide to follow one of them, please double-check everything yourself (for example, a flight may not be available or a museum might be closed on a day I've scheduled it).
Here are a few samples (click to see full-size):
All 32 teams:
Brazilian readers, if you have suggestions or corrections, please leave them below!