Bester Gletscher -Expressroute von Interlaken für malerische Aussichten?

I’ve taken the train on most of the Glacier Express route (not necessarily on the Glacier Express itself) and I think the most scenic part is the segment near Filisur (the Albula line). That said, the special trains are kind of tourist traps; the views from normal trains are already excellent, and you can just buy a point-to-point or day ticket and hop on and off as much as you’d like. Note that the Glacier Express line does not go through Interlaken, so you’ll need to decide where to position yourself to start.