The church of Saint Vittoria is closely related to the Roman town of Trebula Mutuesca. A small catacomb, situated under the belfry, which extends under the nearby hill by means of a narrow tunnel, reminds us of the cult of Saint Vittoria. According to tradition, the martyr was buried in a strigil sarcophagus preserved at the entrance of the tomb. At the far side of the central nave we can see a well whose water is considered a panacea by the local religious population. The beautiful Romanesque façade leads to an atrium and the entrance to the asymmetric triple-naved church. the right nave is divided by means of large crozier shaped columns made of different elements, while the left nave is composed of simple pilasters. Two walled iscriptions, which can be seen inside the building, remind us that in the twelfth century the church underwent a series of visible restorations on the order of the bishop of Rieti, Dodone. During the construction of the church together with the bell tower, a quantity of re-used material, architectural fragments and inscriptions gathered from the nearby Roman ruins, were re-employed and placed on the open space in front of the building.