In the 3rd century, the city had an amphitheater which was located at the level of the present Donjon, vast baths and a temple of which a few statues and columns were found.
You have to go place de la Pucelle to observe one of the last visible traces of this period: a monumental fountain that has crossed the ages. Its good state of preservation and the quality of the decoration of its columns justified its reassembly (in the reception hall of the Enedis building). It was part of a vast 9000 m² complex overlooking the Seine and located along a lane. It is thought to be the residence of a shipowner.
The layout of Rouen’s streets also reveals the mark of the Romans. The streets of Carmes, aux Juifs or even that of the Gros-Horloge date from this period.
It is the massive Christianization of the Roman Empire that marks the end of the Roman period. From 392, the only authorized religion was Christianity. In Rouen, this was the time of the episcopate of Saint Victrice, who initiated the construction of the first cathedral.