Portico: has a balustrade of stone and plastered concrete that protects the entrance side and the right side. It is supported by two pillars stone, square base and mortar recently restored, like the rest of the building. On top of the pillars rest the roof beams of three triangular flap. The roof frame is made of wooden beams and joists. The floor of the porch is stone and mortar and has a trapezoidal shape.
Facade: it is characterized by the two slopes of the roof (gabled). Leaning against the wall on the right is the vestry, and the front door is made of wood with two doors. Above the doorway is framed by concrete jambs and has a large wooden beam set among the stones.
To the left and right of the portal two small rectangular windows are protected by iron grating. The back of the building is used as a garden. The bell tower, made of brick and mortar, has a bell of modest size.
Interior: the access to the altar is through a step. The left wall has a rectangular window. It is believed that the building can be traced back to the tenth century. The building stands above the community, at the end of the paved road.
Rectangular, with a single nave preceded by a porch.
Roofs covered with brick tiles.
VAULTS OR CEILINGS
The ceiling is made by a barrel vault.
The stairs lead to the portico overcoming some stone steps.
External facing: bricks and mortar as a binder. Internal facing: painted plaster.
The flooring of the porch is made of stone, and that of the nave is composed of tiles.
The chapel dedicated to Our Lady of Caravaggio, was mentioned for the first time in the course of the pastoral visit of Monsignore Giulio Resta, Bishop of Tortona, 15 October 1709. "Oratory to the title of Our Lady of Caravaggio placed in Villa Cornelian subject to the parish church, where she is celebrated through devotion. There she has the necessary ornaments, praising the piety of the people, and the Prioress." The oratory in time has undergone various renovations which has clearly altered the original structure, based on the evidence gathered by the older inhabitants. At the beginning of this century, however, the building was already as it appears today. Recently, consolidation work has been carried on and restoration completed in 1995.
(These news are from the book: ROLANDO SAPELLI, Bagnaria. Storia uomini e fatti, Guardamagna Editore, Varzi, 1997).
Source: Thesaurus montanus. I Beni Architettonici e Artistici della Comunità Montana Oltrepo Pavese, volume e CD rom, ed. Torchio de’ Ricci, Certosa di Pavia, 2003