I really like this idea. But yeah, as aseerel4c26 mentioned, there is the Wikidata identifier that could be used.

We should be aware that more than one Wikidata ID is used for different objects, though. For instance, I’ve seen different statues depicting the same person being linked to that person’s Wikipedia page. That’s something to look out for.

Of couse the problem is that there are more OSM nodes than Wikidata entries, so relying exclusively on Wikidata would be insufficient for our needs.

Great idea! amenity=place_of_magic seems like a nicely fitting tag for those places. Thanks for helping.