 The present small cathedral is dedicated to Nôtre-Dame-de-l'Assomption.In the Middle Ages, the new structures of the town were gradually built away from the junction adjacent to the rivers to slightly higher ground because of a rising river.Alluvial silt deposited in the beds of the small rivers—a familiar result of deforestation in the rivers' upper watersheds—had raised the beds of the rivers and extended the floodplain.