Once difficult to access, the Jungfraubahn cog railway now goes to the Jungfrau railway station at 3,454 m (11,332 ft), the highest in Europe. The Jungfraujoch is the lowest pass between the Jungfrau and Mönch.

In 1893 Adolf Guyer-Zeller conceived of the idea for a railway tunnel to the Jungfraujoch to make the glaciated areas on the south more accessible. The building of the tunnel took 16 years and the summit station was not opened before 1912. The goal was in fact to reach the summit of the Jungfrau with an elevator from the highest railway station inside the mountain. The complete project was not realized because of the outbreak of the World War I.
The train into the mountain leaves from Kleine Scheidegg, which can be reached by trains from Grindelwald and Lauterbrunnen via Wengen. The train enters the tunnel running eastward through the Eiger shortly above Kleine Scheidegg. Before arriving at the Jungfraujoch, it stops for a few minutes at two other stations, Eigerwand (on the north face of the Eiger) and Eismeer (on the south side), where passengers can see through the holes excavated from the mountain. The journey from Kleine Scheidegg to Jungfraujoch takes approximately 50 minutes including the stops; the downhill return journey taking only 35 minutes.