One of the greatest train routes of switzerland is the Bernina Express from St Moritz to Tirano.
The Bernina Express starts at 585 m above sea level from Chur train station in the direction of Thusis and takes the Albula Railway to Pontresina. There the train switches from the AC contact line of the main network to the DC contact line of the Bernina Railway. As far as Ospizio Bernina, the route belongs at an altitude of 2253 m above sea level and then leads in several loops over Alp Grüm downhill into the Poschiavo. The end of the train is Tirano in Italy, which is only 429 meters high.
The tour takes arround four hours and four minutes to cover the 144-kilometer from Chur to Tirano.
So when you travel to switzerland don't miss this train.