Sant'Ambrogio di Torino  Sant'Ambrogio di Torino () is a "comune" (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 25 km west of Turin in the Susa Valley. Sant'Ambrogio di Torino borders the municipalities of Caprie, Villar Dora, Chiusa di San Michele, Avigliana and Valgioie. The ancient thousand-year abbey of the Sacra di San Michele, founded in the years between 983 and 987, is located within the municipality at the top of Mount Pirchiriano. The town's sights include several medieval towers, the 13th century castle and walls, a Romanesque bell tower from the 12th century and remains of the 11th century church of San Pietro. The Historical Archive of the Municipality of Sant'Ambrogio di Torino preserves documents from the year 1553. The archive of the Parish of San Giovanni Vincenzo holds records from the year 1580 onwards, when the Parish became independent of the Sacra di San Michele. Since 1810 the parish of San Giovanni Vincenzo in Sant'Ambrogio di Torino, has taken care of the conservation of Breviary of San Michele della Chiusa, a liturgical text of 1315 in two volumes which shows the annual cycle of prayers of the monks of the Sacra di San Michele, and contains parts of melodies sung with notations typical of this monastery, with forms not found in Gregorian texts of other monasteries. Sant'Ambrogio di Torino is twinned with: