Thought so too but then I scrolled to Europe and where I live literally every single gym is on the map, even one that is either very non-public or only exists on google maps (tried to get there once but there was absolutely nothing). Both eastern and western Europe covered very well, kudos for grepping those places properly.
I wonder where they're getting the data. I assumed OSM but I found at least one place on this map that I couldn't find on OSM or in All the Places (but it is on Google Maps).
If anything it seems to err on the side of false positives. A lot of these places seem to be traditional gyms or trampoline parks that I don't think have any bouldering walls.
I used Google map API to fetch all the gyms then cached it locally. It only allows (at least from what I can find) text search within a viewport. I think there are some problems when loading boulder gyms in France. At first glance, I thought France was not really into bouldering...
True. I did fetch data from Google Maps. Can't guarantee that the data is accurate in every place. But i think i will implement something like a "add/remove your gyms"
