Fresh mountain air, fresh crisp snow, exhilaration, truly spectacular scenery; there are many reasons why we head off into the mountains every winter, don our salopettes and ski jackets and hit the slopes. But if you want to make the journey part of the holiday there's no better way to get there than catching the train. You can check in half an hour before for your Eurostar service to Paris, enjoy extra legroom and storage space, get up and go to the bar car or look out of the window at the changing landscapes of rural France and Alpine Switzerland.