The amazing Semmeringbahn located in Austria. Amazing views and amazing old bridges in the mountains. My idea would be to have the route run from Gloggnitz in the north to Bruck an der Mur in the south. An alternative to Bruck an der Mur as end could be Mürzzuschlag but I feel that would be a bit short for this amazing of a route. The train to serve on this route would be a Siemens Taurus along with Railjet coaches and the cab car that looks a lot like the Taurus.