Bernina Express Mighty Trains : Season 3 Episode 3

Mighty Trains takes you to Switzerland – home of the Bernina Express. It's one of the most beautiful train journeys on earth – especially in the winter. Traveling along the highest railway line in Europe, this passenger train navigates 55 tunnels, nearly 200 viaducts and bridges. The engineering feats along the line are so spectacular it's the first of three railway lines on the planet to make the UNESCO World Heritage list.