Unlike the nave intended for the faithful, the transept and the apse constitute the parts of the church reserved for religious people. In Pérignac, the cut stone construction of the apse testifies to the importance given to the sanctuary. Particular care was also given to the sculpted decoration of the transept, its chapels and the apse. Archaeological surveys have revealed the presence of painted decorations. The church is dedicated to Gervais and Protais, sons of Saints Vital and Valérie. After the martyrdom of their parents, the twins converted to Christianity. They are stopped by Nero who asks them to recant. Refusing, the brothers are then imprisoned, flogged and then beheaded. This term could indicate a very ancient foundation of the church. The building has a Latin cross plan. The nave does not have a window: the light comes from the bays of the facade, the apse and the apsidioles. The passages designed to connect the nave and the apse without having to cross the space of the transept crossing constitute a curiosity. This formula, which is quite rare in Charente Romanesque buildings, is nevertheless found not far from here in three other churches: Puypéroux, Nonac and Conzac. The church offers Romanesque sculpture of good quality, the difference in style of which can be explained by the intervention of several workshops. The bell tower rebuilt by the architect Warin is a replica of the bell towers designed for Angoulême Cathedral by his mentor, the architect Paul Abadie fils, around 1850.