Arras was founded on the hill of Baudimont by the Celtic tribe of the Atrebates, who named it Nemetacum or Nemetocena in reference to a nemeton (sacred grove) that probably existed there. It was later renamed Atrebatum by the Romans, under whom it became an important garrison town. The archaeological site Nemetacum in Arras is one of the rare sanctuaries devoted to the oriental god Attis in France.
References:Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).