Openstreetmap

It is quite common for a community centre or school hall to be used for various different purposes, outside of whatever its primary purpose might be. For example it might be used by a dance club on Wednesday nights, a taekwondo class on Thursday, AA on Friday, and by a church group on Sunday. I found thanks to this answer that, unfortunately, OSM explicitly does not encourage representing these activities.

Nevertheless, it is very useful for people to be able to navigate to and search these sorts of activities & groups. For example, if I'm attending a new sports club for the first time, it's much easier to type into my navigation app the name of the sports club, rather than look up the street address or the name of the host venue. In Google Maps this works perfectly for groups established enough to have an entry in their database.

Is there any equivalent of this that relies on OSM for mapping data, with an open/editable database of groups & organisations that do not have a fixed 'address' visible from the outside?