Glacier Express

The 'slowest express train in the world', an 8-hour scenic journey between Zermatt and St. Moritz across the Swiss Alps, crossing 291 bridges and passing through 91 tunnels, including the Oberalp Pass at 2,033 m and the Landwasser Viaduct.

The panoramic carriages need a seat reservation on top of a ticket, and should be booked well ahead in summer. You can also travel the same route on regular regional trains for much less. The Bernina Express, from Chur or St. Moritz to Tirano in Italy, is another spectacular line.