The church was commissioned late in life by Charles Emmanuel II, Duke of Savoy, and completed after his death in 1675 with the patronage of his widow Maria Giovanna Battista of Savoy-Nemours.

[1] The main altar (1703) was designed by Antonio Bertola with six Solomonic columns surmounted by statues of Faith Hope and Charity by Carlo Francesco Plura.

[3] The imposing Neoclassic pronaos (1823) of the facade, designed by Giuseppe Maria Talucchi [it] has four monumental columns, flanking advanced wings with pilasters, and a triangular tympanum.

On the walls are four canvases depicting episodes in the Life of Mary, completed by Conca, his brother, and their studio, including an Annunciation, Visitation, Presentation of Jesus at the Temple, and an Assumption of the Virgin.

[4] For special feasts, such as Christmas, Pentecost, and the anniversary of the consecration of the church (in November), an altar plate (paliotto) is displayed, made of mother of pearl, ivory, tortoiseshell, and hard-wood.

[5] Between Christmas and Epiphany, the entrance to the church is decorated with a presepe consisting of 30 life-sized mannequins, dressed in period costume, sculpted by Anton Maria Maragliano (1664-1739).