St-Leu is a part of Amiens north of the city center. It has many older wooden and brick houses and several canals. At the foot of the cathedral, traversed by canals, this picturesque area was largely rehabilitated during the 1990s. It extends to the Somme canal, located more to the north, at the foot of the Coteau Saint-Pierre on which the fortress of , called "Citadelle", was built. Historically, it was the poor quarter of the city, where butchers, tanners and dyers gathered.