The Jungfrau railway is a rack railway which runs 9 kilometres (5.6 mi) from Kleine Schneidegg to the highest railway station in Europe at Jungfraujoch. It took sixteen years to build, construction began in 1896 and was managed by Adolf Guyer-Zeller.
The observation instrument in the astronomical dome is a 76 cm telescope with Cassegrain and Coudé focus, and is part of the solar spectrometer of the Institut d'Astrophysique et de Géophysique de l'Université de Liège, Belgium. There's also a meteorological cupola, a weather station as well as a LIDAR experiment run by the École Polytechnique Fédérale de Lausanne (EPFL) as well as many long-term experiments permanently installed in the Sphinx laboratories.
The Research Station at Jungfraujoch, inaugurated in 1931, comprises five laboratories, two of which are equipped for chemistry experiments, a mechanical workshop with a small equipment room as well as an air compressor to supply liquid nitrogen.
The Aletsch Glacier is a world heritage site (UNESCO), the largest glacier in Eurasia and it's surrounded by nine mountains higher than 4000m (13'100ft). It has a lenght of 23 km (14 mi). In August 2007, photographer Spencer Tunick used hundreds of naked people in a "living sculpture" on the glacier to draw attention to global warming.