So, Pokémon Go has sort of taken over the world! (Especially those areas where it's actually been properly released.) But how do you know where all the PokéStops are?
One way to find PokéStops is to get ahold of the map from an older game called Ingress – which was produced by the same company, Niantic Labs.
Ingress has some similarities with Pokémon Go, but is a capture-the-flag style game based around finding and holding "portals", using a real-world map. Its userbase was much smaller, but over the course of the last four years or so, those users have been submitting IRL spots that they consider interesting in their areas, which were then turned into portals within the game. Those portals now appear to have been turned into PokéStops, which is why Pokémon Go has such impressive global coverage of locally notable spots.