From the Sihlsprung up to the entrance to metropolitan Zürich, the valley is a mixture of urban and rustic landscapes. The origin of the Sihl River is to be found on the 2283-meter Drusberg. The Sihl flows through the Sihl Lake near Einsiedeln and meanders through the Sihl Valley (Sihltal) towards Zürich.
Niklaus von Flüe lived from 1417 until 1487, first as a farmer and councilman, then as a hermit in the Ranft Ravine. The mystic and peacemaker, who was canonized in 1947, is Switzerland's national saint and the patron of numerous churches.