The PE (Panorama Express) 961 BERNINA EXPRESS from Landquart via Klosters-Davos-Filisur-Alp Grüm-Poschiavo-Tirano is crossing the highest viaduct of the Rhaetian Railway network, the 89 meter high and 210 meter long Wiesen viaduct, with a main span of 55 meter. "Allegra" railcar ABe 8/12 # 3504 is pulling 3 second class and 2 first class panorama cars, and in the rear a yellow two axles open observation car, running from Davos Platz to Tirano, new since the last season. The impressive viaduct was built from 1906 to 1909, is the longest stone arch bridge of the RhB and the second highest railway bridge of Switzerland.
