Aroser Weisshorn, Mountain summit in Grisons, Switzerland

The Aroser Weisshorn is a summit in the Plessur Alps in the canton of Grisons, reached by a two-stage gondola from the valley. The gondola stops first at a middle station, from which marked trails branch off in several directions toward the top and surrounding terrain.

The Weisshorn became Arosa's ski mountain early on: in 1938 two ski lifts opened on its slopes, including the Carmenna lift, which covered 1256 metres and climbed 321 metres. A 1944 plan to extend it to 150 metres below the summit failed because Chur landowners objected. In 1955/56 the Weisshornbahn cable car was built for about 2.8 million francs, and in 2000 a four-seater chairlift replaced the old drag lift.

The summit is the starting point for paragliders, who launch from the ridge thanks to the location and favourable winds. From 2009 a climbing garden with 16 routes (grades 4b–6a) existed temporarily on the south flank at around 2,500 m, reached from the summit by cairn-marked trails.

The gondola runs year-round, so the summit is reachable in any season and for visitors of different fitness levels. The middle station is a good starting point, since trails of different lengths and difficulty levels begin there.

Walking the marked trail to the top, visitors can see how alpine plant life changes as the elevation rises, with different vegetation zones following one another over a short distance. This shift is visible to anyone without any botanical background and makes the hike itself a kind of open-air lesson.