Boulogne-sur-Mer is a coastal city located in northern France, along the English Channel. It is known for its rich maritime history and serves as an important fishing port. The city features a mix of historical architecture, including the impressive Basilique Notre-Dame and remnants of its medieval walls. The area is also famous for its beautiful beaches and scenic landscapes, attracting tourists and locals alike. Boulogne-sur-Mer is home to the Nausicaá National Sea Centre, one of the largest aquariums in Europe, which focuses on marine conservation and education.