Rising dramatically at an altitude of 960 metres on the peak of Mount Pirchiriano, the Sacra di San Michele dominates the entrance to the Val di Susa. Positioned on the border between the Cottian Alps and the Po Valley, this imposing religious complex is the official symbolic monument of the Piedmont region and the first Italian stop on the Via Francigena. Its severe, monumental silhouette famously inspired Umberto Eco's historical novel The Name of the Rose. The site originally hosted a Roman military stronghold in the 1st century—evidenced by a surviving plaque from the Surio Clemente family—and later a Lombard fortress built to repel Frankish invasions. Its transformation into an abbey occurred between 966 and 1003, initiated by Saint John Vincent, a former Archbishop of Ravenna turned hermit, following a vision of the Archangel Michael. Further expanded by the French Count Hugon of Montboissier to atone for his sins, the abbey reached its zenith under Benedictine rule from the 12th to the 15th centuries. After being suppressed by Pope Gregory XV in 1622 and abandoned for centuries, it was entrusted to the Rosminian fathers in 1835 at the behest of King Charles Albert.
What to see
The architecture is a complex layering of Norman-influenced Romanesque and Gothic styles. The structure rests on a massive 26-metre basement commissioned by Abbot Ermengardo between 1099 and 1131. Visitors enter via the Scalone dei Morti (Stairway of the Dead), climbing 243 steps flanked by arches, niches, and tombs where monks' skeletons were visible until recent times. At the top sits the Porta dello Zodiaco (Zodiac Door), a 12th-century marble masterpiece sculpted by Niccolò and Pietro da Lione. Its reliefs of zodiac signs act as a memento mori representing the passage of time, showing distinct influences from the Toulouse school of sculpture. An early 11th-century Romanesque portal in grey and green stone leads into the "New" church, initially designed by the architect Guglielmo da Volpiano. Inside the nave and two aisles, notable artworks include a large 1505 Annunciation fresco on the left wall and a triptych by Defendente Ferrari in the Old Choir. Uniquely, the physical summit of Mount Pirchiriano forms a load-bearing pillar inside the church, marked by a plaque bearing the words of Rosminian poet Clemente Rebora: "culmine vertiginosamente santo" (vertiginously holy peak). The crypt below retains the 10th-century design of John Vincent, featuring columns and niches with clear Byzantine influence. The northern side of the complex contains the ruins of the 12th-century "New Monastery". Once an imposing five-story building housing dozens of monks, it was ruined by the French troops of Nicolas de Catinat in 1629 and further damaged during the 1706 Siege of Turin. Here stands the isolated Torre della Bell'Alda (Tower of the Beautiful Alda). Legend dictates that a girl named Alda jumped from it to escape mercenaries and was miraculously saved by angels, only to die when she repeated the leap to prove it to her fellow villagers. Nearby are the octagonal remains of the Monks' Sepulchre, designed to replicate the Holy Sepulchre of Jerusalem.
Visiting
The abbey and its museum, which welcomed over 100,000 visitors in 2016, are fully accessible to the public. While a fire in January 2018 damaged the roof of the Old Monastery, necessitating extensive restoration work, the architecturally significant areas were unharmed and remain open under the care of the Rosminian rectors.
Our editors' tip
Look for the point inside the church where the bare rock of Mount Pirchiriano emerges from the floor to act as a structural pillar. It is a striking architectural detail that physically anchors the building to the mountain and highlights the medieval builders' engineering feat.