The Fort de Champillon is a twentieth-century Swiss fortification located in the heights overlooking the Rhône valley from the north between Montreux and Monthey.

Completed in 1944, the fort secures the road and rail lines running east from Lausanne to the mountainous interior of Switzerland.

The position is an advanced work protecting the approaches to Fortress Saint-Maurice, part of the Swiss National Redoubt.

The Fort de Champillon is armed with two 105 mm guns in northwest-facing casemates, cut into the rock face of the west-facing cliff.

[2][3] A variety of smaller blockhouses, observation posts, anti-tank lines and infantry shelters are in the immediate area, none connected directly to Champillon.