Zwölferhorn, Mountain summit in Salzkammergut, Austria.

Zwölferhorn is a 1,522-metre summit above Sankt Gilgen and the Wolfgangsee in the Salzkammergut. A cabin cable car, rebuilt in 2020 with new valley and summit stations, runs up from Sankt Gilgen; the original ran from 1957 to 2019. The Arnoweg long-distance trail crosses the summit, and two launch sites on the mountain are used by paragliders.

The mountain gained wider recognition in 1957 when a cable car system was built, making access much easier for visitors starting from Sankt Gilgen. Since then, the peak has become a popular destination for day visitors seeking views and mountain air.

The mountain huts in the area preserve the tradition of Austrian alpine culture and offer hikers a place to rest and eat. Visitors encounter locals who use the mountain as part of their daily lives and shape how the landscape is experienced.

Visitors can hike up from Sankt Gilgen in proper footwear or take the cable car to save time and spare their legs. Weather can change quickly at altitude, so bringing plenty of water and a light jacket is a smart idea.

Two launch sites on the Zwölferhorn are used by paraglider pilots, who take off from the summit and circle above the Wolfgangsee. The peak also carries a VHF broadcasting installation operated by the Salzburg stations Antenne Salzburg and Radio Austria, a piece of infrastructure hikers notice near the top.