Artillery Fort of Champex, Military museum and fortress in Valais, Switzerland

The Artillery Fort of Champex (army designation A 46) is a rock-cut works at 1,450 m at the southern entrance of Champex-Lac, below the south ridge of Le Catogne. It has four casemates and 600 m of tunnels, with gun positions for two batteries, two ammunition magazines, two observation posts and a fire-control centre. It overlooks the Orsières basin, 500 m below.

The complex was built between 1940 and 1943 and served Switzerland's defense strategy against potential Italian attacks during World War II. It was part of broader efforts to protect Alpine passes.

The site takes its name from the Champex area and serves as a place where visitors learn how Switzerland prepared its defenses during a critical period. The tunnels reveal the daily reality of soldiers stationed far above normal settlements.

The fort lies at 1,450 m at the southern entrance to Champex-Lac, built into the rock beneath the south ridge of Le Catogne. Guided tours run through 600 m of tunnels and four casemates; the interior stays cold and damp, so bring warm layers and sturdy shoes. Lighting is limited and passages are narrow.

The facility was completely self-contained and could supply up to 300 soldiers with everything needed without relying on outside support. This self-sufficiency was crucial for a secure defensive position.