Originally Posted by
CPH-Flyer
Not entirely the correct description. You get lounge access at out stations where there is a Star Alliance facility. So London, Frankfurt, Munich, Malpensa, and quite a few more, you will get lounge access. If there is no Star Alliance lounge, e.g. Barcelona, you do not get lounge access. Same for fast track, Star Alliance Gold Track is fine.
I did mention *A hubs

But you're right about some other outstations that have *G lounges, e.g. LHR, AMS.. Anyway, that's going away soon and I believe SkyTeam lounge footprint in Europe is much smaller outside their hubs.