Jungfraujoch is a col or saddle between the Mönch and the Jungfrau in the Bernese Alps on the boundary between the cantons of Bern and Valais, inside the Jungfrau-Aletsch Protected Area.

Strictly, the Jungfraujoch is the lowest point on the mountain ridge between Mönch and Jungfrau, at 3,471 meters (11,388 ft). It is just above this location that the mountain station of Jungfraubahn is located, Jungfraujoch railway station, which at an elevation of 3,454 meters (11,332 ft) is the highest railway station in Europe. The Jungfraujoch is often called the “Top of Europe” in tourist literature.

Jungfraujoch view from the Sphinx Observatory

Not far east of the col rises a peak called the Sphinx, which tops out at an elevation of 3,571 meters (11,716 ft). It begins from the Jungfraujoch on the Valais side and at the Great Aletsch Glacier. There is an elevator to the summit of the Sphinx, where a small viewing platform and a scientific observatory, the Sphinx Observatory, are located.

Jungfraujoch Sphinx Observatory 2

The Jungfraujoch is also home to one of the Global Atmosphere Watch’s atmospheric research stations. The Jungfraujoch can only be reached through a 7.3 km long cog railway tunnel, served by the Jungfraubahn, the highest in a series of cooperating railway companies that provide access to the Jungfraujoch from Interlaken.