Constructed in: 1150
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The Belfry of Boulogne-sur-Mer (Pas-de-Calais) is a 12th-century belfry/donjon in northern France, originally serving as the watchtower of the count's palace. Its lower sections date back to the 11th and 13th centuries, while the upper part, added in the 17th century, houses a 4,048 kg bell named "estourmie". In front of the belfry stands the town hall, constructed in 1734.
