What are the most scenic train routes when traveling through Europe?

There are many great scenic train routes throughout Europe. If you like mountains, there's the Bernina Express crossing from Switzerland to Italy via the Swiss Alps. The West Highland Line in Scotland offers spectacular views of the rugged highlands, serene lochs, and flowing coastlines. And if you're keen on a real adventure, you can try the Trans-Siberian Railway, which spans an epic route across Russia.