Baignes Abbey became a parish church after the revolution. It was part of the diocese of Saintes until the middle of the 19th century. The foundation of the Abbey would seem to date back to the 11th century. It was ransacked during the 100 Years War and then destroyed by the Protestants. The current building is totally different from the Old Abbey due to the destruction/modifications that have taken place.
The church is in the form of a rectangle thirty meters long and ten meters wide, flanked by 4 buttresses, one of which is located on the north wing and the 3 others on the south wing, a bell tower and a small extension on the south west part housing a chapel dedicated to the Virgin
Massive building, reinforced by buttresses, low and poorly lit, it has a facade with a Romanesque portal surmounted by a large rose window. This gate is made up of 2 straight legs, and a projecting coving made up of 3 semicircular rollers with a keystone. The oculus rose is surrounded by a frieze with a sawtooth motif.
The porch opens onto a single nave 22 m long by 9 wide without side aisles. It is made up of 4 bays with semi-circular vaults. The south wall is pierced under the 1st bay with a large semi-circular arch giving access to the chapel. The north wall has a pulpit which bears a monogram which would be that of Louis XIV.
The choir of the church, raised from the nave by 3 steps, consists of a flat chevet and a span of semi-circular vaults. The bedside wall is pierced at each end with a rectangular door allowing access to the sacristy.
The old sacristy has just been refurbished and has a very modern look with paneling on the floor and ceiling.
The chapel of the Virgin is located on the southern extension of the church. It measures 13.50 m long by 7 wide, and consists of a small single nave 10 m long by 7 wide and a choir with a flat apse. The floor of this chapel is 1.25 m lower than the floor of the church corresponding to the initial floor of the old abbey.
Access to the bell tower is through a door located on the east wall of the nave of the chapel. It consists of 4 floors and a vaulted ground floor. The facing is made up of medium-sized cut stone for the ground floor and the 1st floor and rubble stone coated with brown lime for the 2nd and 3rd floors.