
around us
Coastal escapes & Norman history
The Domaine de Joinville opens onto an exceptional region. From the white cliffs of Le Tréport to the colourful façades of Mers-les-Bains, give in to the wild charm of the Alabaster Coast and the light of the Baie de Somme.
explore the coastthe essentials
Four gems within reach
Each neighbouring destination reveals a character of its own, shaped by the tides and by late-nineteenth-century elegance.



an exceptional seaside town
Le Tréport & its giant cliffs
Set against the highest chalk cliffs in Europe, Le Tréport lives to the rhythm of its working fishing harbour, its unpretentious seafood restaurants and its bracing sea air.
Take the historic funicular — free of charge, cut straight into the rock — up to the cliff top for a striking view where the blue of the sea meets the Norman horizon.



architecture & seaside poetry
Mers-les-Bains and its Belle Époque quarter
Step back in time along the Esplanade du Général Leclerc, lined with listed villas whose façades are adorned with delicate ceramics and colourful balconies.



royal heritage & hidden history
The town of Eu, home of Louis-Philippe
A short walk from the estate, the Château d’Eu and its handsome wooded park tell the private story of the last King of the French, Louis-Philippe.
Explore this red-brick architectural gem restored by Viollet-le-Duc, admire the stately Collégiale Notre-Dame and wander the cobbled lanes of one of the “Plus Beaux Détours de France”.
grand site de france
The Baie de Somme, a wild sanctuary
Where the river meets the Channel lies a magical estuary of shifting light — an endless landscape of water, sand and migratory birds.

The seal colony
France’s largest harbour-seal colony lives here. Watch them from a respectful distance with a naturalist guide.

The Marquenterre park
A haven for thousands of migratory birds at the heart of a remarkably rich dune ecosystem.

The steam railway
Step back in time aboard the historic steam train between Le Crotoy and Saint-Valery-sur-Somme.
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Living at the Domaine de Joinville

Rooms & Suites
Twenty-seven charming rooms, a park and lounges: the 3-star hotel welcomes you in peaceful surroundings, minutes from the sea and the Baie de Somme.
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The Restaurant
Home cooking built on fresh, seasonal produce, a lively cellar and a bar where we love introducing French spirits and beers.
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The Spa LeLys
Hammam, jacuzzi, outdoor swim spa, facials and massages: our spa invites you to unwind in every season.
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