The Fort de Cindey (Swiss designation A155) is a component of Fortress Saint-Maurice, which is in turn one of the three principal fortified regions of the National Redoubt of Switzerland. The Fort de Cindey was built between 1941 and 1946 in the Scex cliff face immediately to the west of Saint-Maurice to complement the existing Fort du Scex, built earlier in the same cliff. With the Fort du Scex, it comprises a fortress complex encased in rock high above the strategic Saint-Maurice valley. The fort was deactivated in 1995. It is now open for public tours during the summer months.