The Antique Arch was built in 19 AD. e. in honor of the emperor Tiberius. Later, the arch served as a side entrance to the church of St. Siffreius, and even later was part of the local prison service building. The arch has a single passage, on the sides of which there are sculptural images of captured prisoners. Located on Place Saint-Siffrein, near the Church of Saint Siffrein.→