The feast of St. Ambrose falls on May 1, date of discovery of relics (in latin: inventio) in 1639. On that date a solemn procession takes place to the streets of the City. During the procession 16 men (called “incollatori”)carry on the shoulder the processional canopy with the silver statue of the Saint, work of the Roman silversmith Fantino Taglietti (1641).