In Port-Le-Grand, natural landscapes and cultural heritage offer different reasons to visit. The marshes of the lower Somme shape the Chemin du chalet de Blanquetaque, which leads to an architecturally unusual chalet. Archaeological finds at Château de Bonance reveal other layers of history, while the story of Saint Honoré adds to the town’s history. A designated walking route through the Trie Valley is another local attraction.

Marshland and the Chalet de Blanquetaque

The Chemin du chalet de Blanquetaque leads through the marshes of the lower Somme to the chalet. The Basse vallée de la Somme covers 1,426 hectares and six communes, including Port-Le-Grand. Its ecological importance relates to birdlife, habitats and flora. For nature enthusiasts, this offers a broader perspective on the area alongside the specific destination along the route: the marshland can also be understood in terms of these ecological features, not only through the chalet as a standalone building.

The chalet was built in the early 20th century for the Count d’Hardivilliers and purpose-built for snipe hunting. The construction period, patron and original purpose provide a specific historical context for this architecturally unusual building. This building history is considerably more recent than the Gallo-Roman and Merovingian traces at Château de Bonance.

Historic traces and Saint Honoré

Several historical periods can be distinguished at Château de Bonance. In 1846, the foundations of 21 adjacent houses were discovered while a lawn was being laid out in front of the château. The foundations of a Gallo-Roman temple were found in the château woods. A Benedictine nunnery named after Sainte Austreberthe is said to have stood on them in Merovingian times; it was destroyed by the Normans in the 9th century. The site of the château was continuously inhabited from the Gallic period through the Middle Ages. The house and temple foundations, as well as the history of the nunnery, point to different historical layers.

Port-Le-Grand is considered the birthplace of Saint Honoré, who became Bishop of Amiens in 554 or 566. This connection adds a person and his later ecclesiastical role to the archaeological themes.

Walking routes through the landscape

La Trie Enchantée is a route through the Trie Valley in the Baie de Somme Picardie Maritime Regional Natural Park and a designated walking route for Port-Le-Grand. Unlike the Chemin du chalet de Blanquetaque, its named focus is the Trie Valley and its location within the natural park; the other route is associated with the marshland and the chalet. This lets you choose between the two routes based on the landscape feature that interests you most. For specific hiking plans, it is advisable to check current trail conditions.

Discover more destinations: Airaines, Camon, Bresle, Corbie, Nibas, Camps-En-Amiénois, Roisel, Villers-Bretonneux

For the overview of the wider region: Somme.