Oh yes, Wels!!
Struppi spent some school years in this city, so it was really fun for me to visit some well known places from my past. So I started at 20:00 and then I noticed that stage 2 & stage 3 were already closed.
But with the hints and some remembrance about night tours years before I could solve the complete address & coordinates.
Many thanx to Red Hunters for this journey into my past!!!