The centre of the camp of Argentoratum proper was situated on the
Grande Île, with the
cardo being the current Rue du Dôme and the
decumanus, the current
Rue des Hallebardes. As systematic archaeological studies between 1947 and 1953, conducted by
Jean-Jacques Hatt, archaeologist and director of the
Musée archéologique de Strasbourg, have shown, Argentoratum was destroyed by fire and rebuilt six times between the first and the 5th century AD: in 70, 97, 235, 355, in the last quarter of the 4th century, and in the early years of the 5th century. It was under
Trajan and after the fire of 97 that Argentoratum received its most extended and fortified shape. Many Roman artifacts have also been found along the road that led to the camp, the current
Route des Romains in the suburb of Koenigshoffen, such as the stele of
Caius Largennius. This was where the largest burial places (
necropoli) were situated, as well as the densest concentration of civilian dwelling places (
vici) and commerces next to the camp. Among the most outstanding finds in Koenigshoffen were the fragments of a grand
Mithraeum that had been shattered by
early Christians in the 4th century (found in 1911–12 by
Robert Forrer, Hatt's predecessor at the head of the Musée archéologique). Archaeological digs by J.-J. Hatt below the current
Saint Stephen's Church in 1948 and 1956 have unearthed the
apse of a church dating back to the late 4th century or early 5th century, and considered the oldest church in
Alsace. It is supposed that this was the first seat of the
Catholic Diocese of Strasbourg. == References ==