[Aachen]

Sounds like a visibility issue though. Is it available in any other map?

StreetComplete makes painfully visible that OSM is missing this info in a lot of places, but I never heard of any other map even trying to provide this accessibility info

In German cities I find that it's relatively complete btw, but yeah many places (also in Germany) don't have any data at all. Maybe there should be some collaboration where people can sign up for being notified if a blind person would like to visit an area near them and they can do a survey. It's not like it takes a lot of time to answer some questions about the five crossings a given village(-sized area) will have