Swiss railway genius at its peak: a tunnel bored through the Eiger over a century ago delivers you to 3,454m — Europe's highest station — where August means snow underfoot and the Aletsch, the Alps' longest glacier, stretches endlessly below. Take the first train (clearer skies + discounted Good Morning fares), see the Ice Palace and Sphinx terrace, respect the altitude, and use the new Eiger Express from Grindelwald. Around 200 CHF — and worth every franc once in a lifetime.