Icy air streams across your face, snow crunches under your feet, and the view nearly takes your breath away: on one side the view of the Mittelland up to the Vosges, on the other the Aletsch glacier, bordered by four thousand metre peaks. Standing on the Jungfraujoch 3,454 metres above sea level, you can feel it with your first step: this is a different world. It's one you have to experience.