Glacier Train Introduction: Glacier Express (GlacierExpress), its name comes from the Rhone Glacier (Rh^one Glacier) near the Aletsch region. Once the largest glacier in Europe, the Rhone Glacier is now only the fifth largest glacier in Switzerland. The Glacier Express is a railway line running from Zermatt to St. Moritz (you can also go to Davos in summer). Switzerland is a famous sightseeing route.