The Jungfraujoch is a long, expensive day trip from Wengen, but for most visitors it is the point of the whole exercise. The Jungfraubahn climbs from Kleine Scheidegg through a tunnel inside the Eiger and Mönch, surfacing at 3,454 metres at the saddle between the Mönch and the Jungfrau. The station complex includes a viewing platform on the Sphinx observatory, an ice palace carved into the glacier, and a terrace looking south across the 22-kilometre Aletsch Glacier — the longest in the Alps.
The round trip from Wengen takes about half a day. Acclimatise slowly: a third of visitors get altitude headaches. Tickets are eye-watering; the Jungfrau Travel Pass and various early-bird deals soften the blow.