Certain foundations of small elongated freestones bear witness to a building from the end of the 11th century or the beginning of the 12th century. The nave was taken over in the second half of the 12th century and reinforced by arcades. If the base of the bell tower is characteristic of Romanesque architecture, its upper part bears the mark of the first Gothic age. The octagonal stone spire crowns a bell chamber based on a similar plan, the sides featuring alternating single bays and twin bays. Finally, the north wall and the facade were redone in the 19th century, the first bay of the nave having been shortened in order to widen the road passing in front of the church41.
Like the majority of churches in the region, the Saint-Pierre de Gémozac church is based on a plan in the shape of a Latin cross. It consists of a single nave with four bays covered with a pointed barrel vault, which was completely redone in the 16th century. Inside, arcades respond to the buttresses and serve to reinforce the structure of the building. As in some Romanesque churches in the region, the transepts are covered with cupolas. However, if the north brace has a dome on squinches, the south brace has the particularity of having a dome on pendentives.
The two arms of the transept are extended by apsidioles: the oldest (12th century), that of the south transept, forms a vaulted hemicycle; the most recent is a rectangular chapel covered with ribbed vaults. A narrow arcade opens onto the first bay of the choir. This forms a set of two spans. The first is covered with quadripartite warheads, while the second is completed by liernes. The flat apse (13th century), pierced with a triplet, testifies to the Cistercian influence on the architecture of the time.
The church of Saint-Pierre de Gémozac is part of the tourist inventory of the most beautiful churches of Saintonge and is often cited among the religious buildings worthy of a visit. In certain aspects, this church is indeed one of the beautiful Romanesque churches of the Saintonge type, among which are still the remarkable churches of Rétaud, Rioux or even Thaims, all located in its canton.