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Discover the Baie de Somme and the Glass Valley
Staying at Flower Campsite Le Rompval***, your campsite in Mers-les-Bains, means privileged access to one of France’s most beautiful coastal regions. Between majestic chalk cliffs, seaside resorts with Belle Époque charm and unspoilt natural areas, tourism in the Baie de Somme offers unforgettable discoveries.
Whether you want to visit the Baie de Somme with your family, explore its coastal paths or simply enjoy the fresh sea air, you’ll find a multitude of activities and remarkable sites just a few minutes from the campsite.
Sightseeing around the campsite
From Mers-les-Bains to Le Tréport, via the royal town of Eu and the cliffs of Ault, the region abounds in heritage and natural treasures. To explore the Baie de Somme and the surrounding area, let our selection of must-see sites be your guide.
Each commune has its own identity and treasures: Belle Époque villas, remarkable churches, unspoilt forests and exceptional views over the English Channel. To plan your visit, visit theDestination Le Tréport-Mers Tourist Office website.
Mers-les-Bains
- Saint-Martin church: Saint-Martin church was designed by the talented Amiens architect Edmond Douillet, whose reputation as a church builder was already well established. He preferred to draw his inspiration from Christian basilicas with Byzantine domes.
- Belle Époque villas: with the discovery of sea bathing and its therapeutic benefits, Mers-les-Bains underwent spectacular development. At the end of the 19th century, the railroad brought to our shores the first holidaymakers known as “Bathers”. These bathers, drawn from the aristocracy and wealthy bourgeoisie of the time, were to settle here, building the first second homes of our modern world.
- Notre Dame de la Falaise: also known as Notre Dame des flots, the church was inaugurated on August 18, 1878. Its 7-metre-high plinth features three bas-reliefs – by local sculptor Marie-Josèphe Cotelle-Clère – representing the patron saints of the 3 “sister towns”: Saint Jacques for Le Tréport, Saint Laurent for Eu and Saint Martin for Mers-les-Bains.

Le Tréport
In Le Tréport, come and visit the different viewpoints:
- Saint Michel Abbey: founded in 1036 by Count Robert 1st (Count of Eu).
- Saint-Jacques church: built on the ruins of the former parish church and cemetery.
- The Presbytery: the facade of the Presbytery is a listed Renaissance-style building.
- Les Anciennes Halles: built after the First World War, these magnificent covered market halls were closed for some time before becoming a covered market.
- Saint-Julien chapel: built in the 14th century, it houses a 12th-century baptismal font.
- The Cordiers district: very typical for its architecture, very popular with many small shops, the saurisseries at the foot of the cliffs, the funicular railway…
Musée du Vieux Tréport: presents the history of Le Tréport on 3 levels, including sea bathing, shipwrecks and sea rescue, and traditional activities that have disappeared or are in the process of doing so.

Cise wood
This natural wood of oak and ash, nestled in the hollow of the cliff, is unique on the English Channel coast. It became a renowned seaside resort in the early 20th century.
This site, protected from the wind and sea spray, allows lush vegetation to flourish: beeches, oaks, carpets of hyacinths and daffodils rub shoulders with Belle Époque villas perched on their promontories.
With the help of old postcards, you can discover the history of this seaside resort founded in 1898, from the Lumen and Fanfreluche villas to the Victor Hugo viewpoint…
The town of Eu
Come and visit the Royal City between Land and Sea:
- The Château Musée Louis Philippe: built by the Duc de Guise in the 16th century, it evolved over the centuries to become the favorite residence of the last French king, Louis-Philippe. 2012 saw the magnificent restoration of the Galerie de Guise, a sumptuous salon with a collection of 46 portraits.
- The park and the French garden: charming places to stroll around.
- Chapelle Saint Laurent: built in the 19th century as a tribute to the Archbishop of Dublin, Saint O’toole. At an altitude of 100 m, it offers a breathtaking view of the Bresle estuary, the town of Eu and its sister towns, Mers-les-Bains and Le Tréport.
- The Collegiate Church of Notre Dame and its crypt: construction began in the second half of the 12th century in honor of Saint-Laurent O’toole, Archbishop of Dublin, who died in Eu in 1180. A monument of superb proportions, characteristic of the Franco-Norman pre-Gothic period, with its original nave, choir rebuilt in the 15th century and 17th-century organs.
- Chapelle du Collège des Jésuites: the chapel was built in 1613 by Catherine de Clèves, in memory of her husband, Henri de Lorrain, Duke of Guise, assassinated in Blois in 1588.
- Hôtel-Dieu: 17th-century brick and timber-framed hospital complex. Only the library section is open to the public. Rare covered cemetery, resting place of the nuns.

Ault
Initially only a few meters high, the cliffs gradually rise to over eighty meters south of Le Bourg.
The cliffs first dip slightly as you approach the town center, which is built on the flanks of a valley (dry valley) with the main street at the bottom.
They bend again at Bois de Cise, allowing a wood to form and then a hamlet of villas to settle. The view from the top of the cliffs is exceptional.
To the south, you can see the entrance to the port of Le Tréport and, much further away, the Pointe d’Ailly with its lighthouse, which lies beyond Dieppe.
To the north, you can see the low-lying fields, Cayeux, the Baie de Somme and beyond, the Marquenterre dunes. The view extends over almost 60 km of coastline.
Come and walk in the footsteps of Victor Hugo, who stayed here in 1837, and discover the ecclesiastical belfry of Saint-Pierre church dating from the 14th century.
The Baie de Somme railroad
Take a day trip to the heart of the Baie de Somme, aboard the steam train that will take you from Cayeux to Le Crotoy, via Saint-Valéry-sur-Somme.
Welcome aboard!!!
To take a break from the fast-paced world and step back into the last century, travel the Réseau des Bains de Mer at a speed of 25 km/hour.
Listen to the powerful blast of the steam locomotive, smell the coal, then listen to the conductor’s whistle for a moment of relaxation, lulled by the movement of the train and the clatter of the wheels on the rails…
To discover the landscapes of the Baie de Somme in an authentic way, let’s practice eco-mobile tourism.
Leave your car in the parking lot, board the train and take advantage of our combined offers with boating, walking and cycling… you’ll discover the wealth of our natural and cultural heritage.


Discover the Bay of Seals
France’s largest seal colony makes its home in the Baie de Somme.
Seals rest out of the water at low tide on resting places (sandbanks that emerge at low tide) to regenerate their energy, to give birth and nurse their young, to moult…
You have to be very careful: if you approach them too closely, they get scared and jump back into the water, sometimes abandoning unemancipated babies who can’t survive premature separation.
The Picardie Nature association watches over the colony, warns walkers, kayakers and horse riders to keep a minimum distance of 300 meters, and cares for baby seals abandoned at the care center.
Selection of things to do nearby
Discovering the Baie de Somme also means enjoying a multitude of activities for all ages and tastes.
Whether you’re traveling as a family with children, or looking for a sporting thrill, the region offers an exceptional playground between sea, cliffs and verdant valleys. For more ideas, visit the Somme Tourisme website.
Family and children’s activities
The region abounds in activities to share unforgettable moments with the whole family:
- Mers-les-Bains miniature golf course: France’s oldest (1952), a must for young and old alike
- Little tourist train: discover the Three Sister Cities (Le Tréport, Eu, Mers-les-Bains) with audio commentary
- O2 Falaises aquatic center in Le Tréport: pools, slide and inflatables in summer
- Ferme de Beaumont in Eu: free access to kangaroos, llamas and ornamental animals
- Chèvrerie de la Forêt d’Eu: meet the goats and discover farm products
- Embreville corn maze: 1,500 metres of mazes to explore in July and August
- Bowling and cinema at Mers-les-Bains for family evenings out
Escape games, a carousel on the quays of Le Tréport, gardens to explore… plenty to keep the whole tribe busy!


Sports and Outdoor activities
Sport and nature lovers will find plenty to do in our region. Here’s our selection of different ways to visit the Baie de Somme.
Hiking :
- Sentier du Littoral: 6 km from Mers-les-Bains to Ault with panoramic views of the cliffs (experienced hikers)
- Numerous signposted circuits in the Eu forest and Bresle valley
Bike :
- Chemin Entre Verre et Mer: 15 km in the heart of the valley, ideal for families
Nautical activities :
- Sea kayaking with the Rand’eau Kayak club
- Paddle at sea or on the valley’s ponds
- Longe-côte with the Longe C Ault club in Ault; supervised aquatic hikes
- Surfing and bodyboarding with the Glisse Sensations school in Mers-les-Bains
For more information on water sports activities, visit the Station nautique des villes sœurs website.









