Wikipedia
Gornergrat
The Gornergrat (; ) is a rocky ridge of the Pennine Alps, overlooking the Gorner Glacier south-east of Zermatt in Switzerland. It can be reached from Zermatt by the Gornergrat rack railway (GGB), the highest open-air railway in Europe. Between the Gornergrat railway station and the summit is the Kulm Hotel hosting the new Project "Stellarium Gornergrat" and until 2010 the Kölner Observatorium für SubMillimeter Astronomie KOSMA and before that (until 2005) the Gornergrat Infrared Telescope.