Description: Boulogne-sur-Mer | Explore this charming city! (4K), Explore Northern France | Boulogne-sur-Mer to Dunkirk | Cap Blanc-Nez, Crypt, Basilica | Oh So Pom, Boulogne sur mer | France | 4K | walking | City of Boulogne sur mer | Virtual tours
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Boulogne-sur-Mer ( French pronunciation: [bu.lɔɲ.syʁ.mɛʁ] , Latin : Gesoriacum or Bononia , Dutch : Bonen ) is a city in Northern France . It is a sub-prefecture of the department of Pas-de-Calais . Boulogne lies on the Côte d'Opale , a tourist coast on the English Channel , and is the most-visited location in its region after the Lille conurbation. Boulogne is its department's second-largest city after Calais , and the 59th largest in France. It is also the country's largest fishing port, specialising in
Boulogne was the major Roman port for trade and communication with Britain . After a period of Germanic presence following the collapse of the Empire, Boulogne was at the centre of an eponymous county of the Kingdom of France during the Middle Ages , and was occupied by the Kingdom of England numerous times due to conflict between the two nations.
The city's 12th-century belfry is recognised by UNESCO as a World Heritage Site , while another popular attraction is the marine conservation centre, Nausicaa .