Weisstannen is a village located in the Canton of St. Gallen , Switzerland . It lies in the municipality of Mels , south-west of Sargans .

Weisstannen is located at 1,004 metres above sea level on the Seez river in the Weisstannen valley (Weisstannental). It lies at the foot of the Pizol mountain.

Weisstannen is the starting point of the trails across Foo and Riseten passes, which cross to different villages in the Canton of Glarus .