Boulogne-sur-Mer, France: Situated on the northern coast of France, Boulogne-sur-Mer is a historic port city known for its rich maritime heritage and beautiful beaches. Explore the medieval Old Town with its cobbled streets, ancient walls, and the impressive Basilica of Notre-Dame. Visit Nausicaá, one of the largest aquariums in Europe, and discover the wonders of the ocean. Relax on the sandy beaches of Boulogne-sur-Mer or embark on a boat trip to explore the nearby Opal Coast and its rugged cliffs. With its maritime charm, cultural attractions, and proximity to the English Channel, Boulogne-sur-Mer offers a delightful coastal retreat in France.