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Boulogne-sur-mer at the end of 16th century. Drawn by Claude Chastillon. To the left (K), the Lower Town or St-Nicolas parish and Liane river. (G): the roman Tower of Order, (B): the belfry, (A): Notre-Dame cathedral built by Ide de Lorraine around 1100 and squandered under the Revolution (1789), (C): the Castle, and on the background: England.