The Church was gradually built by local craftsmen almost certainly not specialized: in fact you can see it in some asymmetries among which the most 'obvious are, inside the misalignment between the two brick columns supporting the central arch of the vault and outside, the misalignment of the portal and of the cusp with respect to the ledge, while the two side spiers are off-axis with respect to the side-pieces pilasters. In addition, the foot of the peak badly connects with the double colonnade that forms the base. Despite these imperfections executive, the facade as a whole exerts a considerable charm. The most 'rich and elaborate and' the large portal consists of two coupled columns, topped by fluted pinnacoletti: these rises with unpredictable momentum, almost to the cornice of the roof, spire, formed by a frieze in high relief , terracotta foliated inserted in a geometric design of strips and ropes
The tip of the cusp ends with a base on which perhaps, in ancient times, it was the statue of a saint. In the middle, between the two diagonals of the frieze opens the oculus, which is also decorated with terracotta. The most 'rich and refined and' cooked in the large band that frames the door in which the beautiful decorative leaf and 'enclosed by ropes twisted and gorges, carefully graded in creating their relief, with the chiaroscuro, an invitation to 'input. In the lunette cornice between the beautiful and the gateway to a tripartite fresco depicting Saint Grateful bishop on a plate that holds the head of St. John the Baptist, flanked by two angels holding the miter and crosier. The painting was restored in 1926.
On the bed of the tympanum of the portal and 'painted the Assumption. The gable roof encloses the front with a Gothic arched cornice cross, completing the harmoniously together. On the right of the giant portal
figure of St. Christopher, patron of travelers, (XVI), once seen by anyone traveling along the valley, is slowly disappearing and so also on the left, that of S. Bernard of Savoy, who holds the devil chained to a pillar.
