BOULOGNE-SUR-MER, a fortified seaport of northern France and chief town of an arrondissement in Pas-de-Calais, situated on the shore of the English Channel at the mouth of the river Liane, 157 m.
Boulogne occupies the summit and slopes of a ridge of hills skirting the right bank of the Liane; the industrial quarter of Capecure extends along the opposite bank, and is reached by two bridges, while the river is also crossed by a double railway viaduct.
It contains several good streets, some of which are, however, very steep. A main street, named successively rue de la Lampe, St Nicolas and Grande rue, extends from the bridge across the Liane to the promenade by the side of the ramparts.
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