An abbey welded to the summit of a mountain at the mouth of the Val di Susa, guarding the old road into Italy from France. Benedictines began building it around AD 1000 on a peak so steep that the church stands on a huge substructure, its Staircase of the Dead climbing through rock past ancient tombs. Dedicated to the archangel Michael, it lies on a supposed line of Michael sanctuaries running across Europe. It helped inspire Umberto Eco's monastery in The Name of the Rose. Cloud often sits below it; pilgrims have climbed to it for a thousand years.
Description via source. Coordinates and heritage data from the Atika atlas.
Atika pings you when you walk or drive past heritage like this. Works offline, no account needed to explore.