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The Île Saint-Louis is a small island in Paris, France, located behind the Île de la Cité. It was developed in the 17th century, with construction beginning in 1640. The island was planned with a central avenue and several lateral streets, and it features notable houses like the Hôtel de Lauzun. Today, it remains a peaceful residential neighborhood in the heart of the bustling city. The Île Saint-Louis is distinct from Saint-Louis, Senegal, which is an island city and seaport founded in 1659 and was once the administrative capital of French West African territories.12

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2 Britannica Sources
  1. Paris - Île Saint-Louis
  2. Saint-Louis

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