For big buildings/POIs mapped as areas, I would expect the routing engine to bring me to the main entrance, or if not available, any entrance. I also have seen similar problems, for example with the biggest airport in Rome: https://www.openstreetmap.org/search?query=fco Routing starts about 8 kilometers off the entrance and terminal buildings: https://www.openstreetmap.org/directions?engine=graphhopper_car&route=41.8144%2C12.2269%3B41.9010%2C12.5014#map=12/41.8377/12.3629
Route to the actual entrance: https://www.openstreetmap.org/directions?engine=graphhopper_car&route=41.8144%2C12.2269%3B41.7949%2C12.2522 I agree it will require more complicated heuristics to solve problems of this kind (e.g. a router could know, like a human does, that in an airport you want to arrive at the terminal, and not in front of a security fence at the closest point to some arbitrary "centre point"). IMHO the solution to the problem is not adding an address as a point (if it applies to a big area), but rather giving additional information (because where exactly you want to arrive may also depend on where inside the feature you want to go, so there won't be a single answer many of the times). Cheers Martin
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