Presentation
The Three Sister Towns, made up of Eu, Le Tréport, and Mers-les-Bains, form a unique coastal urban area at the border between Normandy and Hauts-de-France in northwestern France.
Located at the mouth of the Bresle Valley, these three complementary communes are linked by history, geography, economy, and tourism.
Each has its own identity, but together, they create a destination rich in cultural, natural, and seaside discoveries.
The town of Eu, located in Normandy in the Seine-Maritime department, is the oldest of the three.
Once a royal city, it is renowned for its castle, which welcomed King Louis-Philippe and Queen Victoria in the 19th century, a strong symbol of Franco-British relations.
Its architectural heritage is remarkable, with the Notre-Dame-et-Saint-Laurent collegiate church, a 13th-century Gothic building, as well as many half-timbered houses and mansions.
A calm, elegant town steeped in history, Eu constitutes the heritage and institutional heart of the trio.
Le Tréport, also located in Seine-Maritime, is an active fishing port facing the English Channel.
This town flourished with the development of seaside tourism in the 19th century, notably thanks to the arrival of the railway.
Today, it is prized for its authentic port-town atmosphere, its fish market, lively quays, and its famous white chalk cliffs, among the tallest in Europe.
The Le Tréport funicular, dug into the cliff and recently reopened, offers spectacular access to the plateau overlooking the sea and provides an exceptional panoramic view.
Mers-les-Bains, located in the Somme department, faces the sea and stands out for its perfectly preserved Belle Époque seaside heritage.
Its seafront is lined with colorful villas richly decorated with ceramics, woodwork, wrought iron, and ornate balconies, all classified as architectural heritage.
A family-friendly and welcoming resort, Mers-les-Bains offers a large pebble beach, water activities, relaxation areas, and a lively summer atmosphere.
Dominated by the statue of Notre-Dame-de-la-Falaise, the town benefits from a unique natural panorama between sea and cliffs.
The unity of the Three Sister Towns lies in their immediate geographical proximity: they are separated by only a few hundred meters and connected by pedestrian paths, walking trails, and even a small tourist train during the high season.
Together, they offer a rare complementarity between historical heritage, port life, seaside architecture, and spectacular natural spaces.
Their location by the sea and at the foot of the cliffs makes them an ideal destination for lovers of nature, history, swimming, and tranquility.
True gems of the English Channel coastline, Eu, Le Tréport, and Mers-les-Bains form a charming, refreshing, and authentic destination, perfect for a weekend or an extended stay, whether as a couple, with family, or among friends.
These Three Sister Towns embody both heritage elegance, port vitality, and the gentle seaside charm of northern France.