Boulogne-sur-Mer

Boulogne Sur Mer is a town in Buenos Aires Province, Argentina. It is in San Isidro Partido and forms part of the Greater Buenos Aires urban conurbation, 26 km (16,25 mi) north of Buenos Aires. It has a population of 73,496 (2001 INDEC census). The town is named after the city of Boulogne-sur-Mer in northern France, where the Argentine general José de San Martín died in 1850.

Boulogne-sur-Mer (, Latin: Gesoriacum or Bononia, ) 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 herring.