Parc Naturel Régional Baie De Somme Picardie Maritime
Parc Naturel Régional Baie De Somme Picardie Maritime
Attractions and places to see in Parc Naturel Régional Baie De Somme Picardie Maritime include a diverse array of natural landscapes and cultural sites. This region, recognized as a "Grand Site de France," features the Baie de Somme estuary, which is the largest in northern France with vast tidal flats, marshlands, and dunes. It is also home to charming medieval towns, Belle Époque seaside resorts, and significant historical landmarks. The area offers a blend of coastal environments, wildlife habitats, and…
Last updated: May 8, 2026
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Hourdel Lighthouse is a lighthouse on the common Cayeux-sur-Mer, it is built on the south side of the Bay of Somme, at the end of the point of Hourdel.
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Walk along the canal, enjoy the view from the benches
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the magic of the Bay of Somme and the marriage with the sea. Just pay attention to the tide times but there is a path at the top and protects you
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A great place on the Bay of Somme. There are beautiful views in all directions.
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A lighthouse at the very tip of the country.
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Walk, look and enjoy all the beauty that the bay has to offer
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The Crotoy municipal marsh is often compared to a miniature version of the Camargue, offering a panorama rich in biodiversity. This natural space promises a total immersion experience for flora and fauna lovers. Don't forget your binoculars to better observe the various species that make their home there, such as storks, swans, ponies and Highland cows. It is also possible to hear or see the green tree frog, an amphibian characteristic of this region.
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Here you will find several platforms to enjoy the view.
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The Baie de Somme estuary itself is a breathtaking natural feature, the largest in northern France, with vast tidal flats, marshlands, and dunes. You can explore areas like the White Route of the Bay of Somme, a paved cycle path offering views of the coast and wildlife. For a unique experience, consider guided cross-bay walks to truly immerse yourself in this dynamic environment.
The Parc du Marquenterre is a world-class bird sanctuary, home to over 300 species of migratory and nesting birds. For seal watching, head to the Pointe du Hourdel, a prime location to observe France's largest colony of harbor and grey seals basking on sandbanks at low tide. The On the Seagull Route also offers opportunities to see various bird species, ponies, and Highland cows in a marshland setting.
Don't miss Saint-Valery-sur-Somme, a beautifully preserved medieval town with cobbled streets, ancient ramparts, and panoramic bay views. Le Crotoy is another charming seaside resort known for its south-facing sandy beach and Belle Époque villas. Mers-les-Bains is famous for its impressive chalk cliffs and the outstanding ensemble of Belle Époque houses of Mers-les-Bains lining the coastal waterfront.
Absolutely! Many attractions are suitable for families. The White Route of the Bay of Somme is a paved path perfect for family cycling or walking. Kids will also enjoy spotting seals near the Le Hourdel Lighthouse and exploring the diverse wildlife along On the Seagull Route. A ride on the Chemin de Fer de la Baie de Somme vintage steam train is also a memorable experience for all ages.
The region is a cyclist's paradise with 160 km of cycling routes, including 77 km of dedicated cycle paths. The Vélomaritime cycle route passes through the majestic Bay of the Somme. You can find various options, from moderate road cycling routes like the 'Alfred Manessier Walk – Le Crotoy loop' to touring bicycle routes such as 'Saint-Valery-Sur-Somme via the pointe de Houdel'. Explore more options on our Cycling in Parc Naturel Régional Baie De Somme Picardie Maritime guide.
There are numerous trails for hiking and walking. The White Route of the Bay of Somme offers easy coastal walks. For more immersive experiences, consider trails like the 'Lamotte Circuit' or the 'Le Hourdel Loop'. The cliffs of Ault also provide breathtaking scenery for walks. Discover detailed hiking routes in our Hiking in Parc Naturel Régional Baie De Somme Picardie Maritime guide.
Beyond seal watching, you can take guided cross-bay walks, which offer an extraordinary way to experience the natural wonder of the bay (only possible with a guide due to tides and shifting sands). Pirogue excursions from Saint-Valery allow you to explore the estuary's canals and get close to seals and birds. Horse riding on the beaches, particularly near Le Crotoy, provides a unique sense of freedom.
The Chemin de Fer de la Baie de Somme offers a unique way to explore the bay. This vintage railway line connects Cayeux-sur-Mer, Saint-Valery-sur-Somme, Noyelles-sur-Mer, and Le Crotoy, providing picturesque views of meadows, marshes, and the bay from a historical perspective.
The Maison de la Baie de Somme, located near Lanchères, serves as an excellent starting point for your visit. It features interactive exhibits that delve into the bay's ecosystems, history, and diverse wildlife, offering valuable context for your explorations.
Beyond the medieval charm of Saint-Valery-sur-Somme and the Belle Époque villas of Mers-les-Bains, you can visit Rue, a historic town with a 15th-century belfry and chapels. The Valloires Abbey and Gardens are renowned for their beauty and historical significance, including a rose garden where the famous Picardy Rose was created. Château de Rambures also offers a notable cultural heritage experience.
Visitors particularly appreciate the diverse natural landscapes, from the vast estuary to the impressive chalk cliffs. The opportunity to observe wildlife, especially seals and numerous bird species, is a major draw. The charming seaside towns, historical architecture, and unique activities like the steam train or guided bay walks also contribute to a highly enjoyable and memorable experience.
The komoot community highly rates the White Route of the Bay of Somme for its coastal cycling and wildlife viewing. The Port of Saint-Valery is also very popular for its scenic views and historical significance. Additionally, the Belle Époque houses of Mers-les-Bains are frequently highlighted for their unique architectural beauty.


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