Two inscriptions are still legible on this bridge, from which we learn that it was finished in the year A.D. 370, and dedicated to the use of the Roman people in the name of the Emperor Gratianus, by Valentinian, Valens and Gratianus. These inscriptions must be understood as referring to the rebuilding of the bridge, though they are so worded as to claim the credit of its first erection. That there was an older bridge is clear, not only from the fact that the island was called inter duos pontes before the time of Gratian, but also from the name pons Cestius, which occurs in the Notitia, and undoubtedly belongs to that bridge. It is not clear who Cestius was, but it is generally supposed that a præfectus urbi of that name in B.C. 46 is the person after whom the bridge was named, and this agrees with the statement of Dion Cassius about the building of the Fabrician bridge. The church of S. Nicola in Carcere, which stands in the Via della Bocca della Verità close to the Piazza Montanara, contains the remains of two or perhaps of three temples. [Sidenote: S. Nicola in Carcere.] These ruins consist first of three fluted columns of travertine with Ionic capitals, which stand in the façade of the church of S. Nicola. Above them is a part of the ancient entablature, and in the room to the left of the portico of the church are two more columns built into the wall. In the nave of the church on the left hand are remains of the cella of the temple, to the pronaos of which the five columns belonged. The walls of the cella were, as has been discovered by excavations, constructed of travertine blocks. At the end of this left-hand wall of the cella, there stood before the last restoration of the church, the remains of a pilaster of the Doric order with an Attic base, and opposite to this pilaster another column. The position of the six columns shows that the temple was of the form called peripteros, i.e., surrounded by a continuous colonnade. On the right-hand side aisle of the church are five other columns built into the wall, and a pilaster which evidently belonged to a second temple standing side by side with the first. These columns are not so high as those of the first temple described, and their style and the intervals between them are different. A portion of the entablature, which is of a simple character, still surmounts them. Two more columns of this temple are to be seen in the wall of the house which stands to the right of the church. It was surrounded with colonnades on three sides, but the back of the cella was ornamented with pilasters only. On the left-hand side of the church are six more half-exposed columns, and some remains of an entablature which may have either belonged to a third and smaller temple standing by the side of the first, or may have been merely the portico of some other building.