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Golfe Du Morbihan

Top 20 Natural Monuments in Golfe Du Morbihan

Natural monuments in Golfe Du Morbihan showcase a diverse landscape of islands, islets, and coastal features within a designated Regional Natural Park. This natural harbor in Brittany, France, is known for its unique microclimate and rich biodiversity. Visitors can explore a variety of natural features, from ancient megalithic sites by the sea to extensive nature reserves. The region offers numerous opportunities to experience its distinct natural environment.

Best natural monuments in Golfe Du Morbihan

  • The most popular natural monuments is…

Last updated: June 27, 2026

Dolmen des Pierres Plates

Highlight • Historical Site

The dolmens here in Locmariaquer fascinated me a lot, a reason to come back here.

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The Duer ornithological reserve is an old salt pan now inhabited by tens of thousands of birds. From the two hides installed occasionally, it is possible to observe specimens throughout …

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Bilgroix Point

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Here you can observe the strong tidal flow in the Gulf of Morbihan.

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Butte de César

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Caesar's Mound is a tumulus 56 meters in diameter and 18 meters high. This pile of stones, covered with a layer of silt and black earth, was explored in 1853. …

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Vincin Riverbanks

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Cycle the Rives du Vincin trail, which winds through a protected natural site teeming with biodiversity. This leisurely route follows the Vincin River and takes you through lush woodlands and …

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Stefano Lombardi
August 5, 2025, Observation Tower 2 of Marais du Duer

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Nice observation tower but not very suitable for telescopes. Binoculars are preferable. The windows are in the way but avoid disturbing the wildlife and protect from the rain. The Duer is also a walk along the gulf on the waters of which many migratory birds, among others, meet. Too bad we can't put some very recent photos here.

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Den
December 22, 2024, Dolmen des Pierres Plates

A site full of history, with a magnificent view of the bay of Quiberon. Be sure to respect the regulations of the place!

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Paul_C
November 12, 2024, Rives du Vincin

Cycle the Rives du Vincin trail, which winds through a protected natural site teeming with biodiversity. This leisurely route follows the Vincin River and takes you through lush woodlands and wetlands that are home to a variety of native bird and plant species. The area is a designated nature reserve, ensuring that its rich ecosystem is preserved. The trail is largely flat, making it ideal for a relaxed stroll, with panoramic views inviting you to pause and appreciate the serenity of the place.

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The observatory is a beautiful wooden tower where you can observe many species of birds. The windows inside are unfortunately dirty with time.

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Alex
September 19, 2024, Dolmen des Pierres Plates

Interesting dolmen right by the sea.

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Breton curiosity to discover

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Seb
June 2, 2024, Butte de César

The Tumiac tumulus is located in Arzon, on the Rhuys peninsula, south of the Gulf of Morbihan, in Brittany. It is also known as Caesar's Mound because, according to local legend, it served as an observatory for Julius Caesar during his war against the Veneti in 56 BC. This building belongs to the large "Carnacean" tumulus, burials of Neolithic elites, such as the Saint-Michel tumulus, in Carnac, and the Ruyk tumulus, in Locmariaquer. https://fr.m.wikipedia.org/wiki/Tumulus_de_Tumiac

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Frequently Asked Questions

What are some of the most popular natural monuments to visit in Golfe Du Morbihan?

Visitors frequently enjoy the Dolmen des Pierres Plates, a historical site by the sea with ancient carvings. Another favorite is Bilgroix Point, offering stunning views of the Gulf's islands and strong tidal flows. For wildlife enthusiasts, Observation Tower 2 of Marais du Duer provides excellent birdwatching opportunities in an old salt pan.

Are there family-friendly natural monuments in Golfe Du Morbihan?

Yes, several natural monuments are suitable for families. The Dolmen des Pierres Plates is a historical site that can be interesting for all ages. Bilgroix Point offers scenic views that families can enjoy together. Additionally, the Observation Tower 2 of Marais du Duer is a great spot for families to observe various bird species.

What kind of natural features and viewpoints can I expect to see in Golfe Du Morbihan?

The Golfe du Morbihan is rich in diverse natural features. You can experience dramatic tidal flows at sites like Bilgroix Point and the Passage de la Jument. The region is also dotted with numerous islands and islets, offering panoramic views from coastal points such as Pointe du Monteno. The Séné Marshes Nature Reserve showcases extensive wetlands and former salt marshes, vital for biodiversity.

What outdoor activities can I do near the natural monuments in Golfe Du Morbihan?

The Golfe du Morbihan is ideal for various outdoor activities. You can find numerous hiking trails, including the popular coastal paths on Île aux Moines and Île d'Arz. For cycling, there are road cycling routes like the Vannes and Arradon Coastal Loop, and mountain biking trails such as the Bilgroix Point – Port Navalo loop. Birdwatching is also a popular activity, especially at the Réserve Naturelle des Marais de Séné.

Are there any historical or cultural sites among the natural monuments?

Yes, the region beautifully blends natural beauty with rich history. The Dolmen des Pierres Plates is a significant megalithic site dating back to 3500-3000 BC, featuring carved drawings. Another notable historical monument is the Butte de César (Tumiac tumulus), a large Neolithic burial mound with local legends linking it to Julius Caesar.

Where can I go for wildlife spotting, especially birds?

The Golfe du Morbihan is a prime location for wildlife, particularly birdwatching. The Observation Tower 2 of Marais du Duer is part of an ornithological reserve, an old salt pan teeming with thousands of birds. The Réserve Naturelle des Marais de Séné is another exceptional site, covering 530 hectares of wetlands and hosting around 200 species of water birds, including avocets and spoonbills.

What is the best time of year to visit the natural monuments in Golfe Du Morbihan?

The Golfe du Morbihan benefits from a unique microclimate, making it pleasant for visits throughout much of the year. Spring and early autumn offer mild weather, fewer crowds, and vibrant natural colors, ideal for hiking and exploring. Summer is popular for enjoying the beaches and island hopping, while winter can be excellent for birdwatching, as many migratory species arrive at the reserves.

Are there any natural monuments that are particularly good for hiking?

Absolutely. Both Île aux Moines and Île d'Arz are renowned for their extensive coastal paths, offering exceptional views and diverse landscapes. Île aux Moines features a 17-km coastal path through lush woodlands and beaches, while Île d'Arz has a 13-km path perfect for leisurely walks and enjoying unspoiled nature. You can find various hiking routes in the region, such as the Tour of the island of Arz.

What makes the Vincin River Nature Reserve a unique natural monument?

The Vincin River Nature Reserve is a protected natural site known for its rich biodiversity. Following the Rives du Vincin trail, you'll pass through lush woodlands and wetlands that are home to a variety of native bird and plant species. The trail is largely flat, offering a relaxed stroll with panoramic views and a serene atmosphere, making it a preserved ecosystem within the Gulf.

What can I expect at Pointe de Kerpenhir?

Pointe de Kerpenhir, located at Locmariaquer, is a majestic rocky point at the confluence of the Atlantic Ocean and the Gulf. It offers breathtaking views of powerful marine currents and passing sailboats, showcasing the dynamic natural forces of the area. Its proximity to ancient megalithic sites also adds a significant cultural and historical dimension to the natural experience.

What do visitors enjoy most about the natural monuments in Golfe Du Morbihan?

Visitors particularly appreciate the diverse landscapes, from serene islands to dramatic coastal viewpoints. The opportunity to observe strong tidal flows, spot numerous bird species in dedicated reserves, and explore ancient historical sites right by the sea are frequently highlighted. The blend of natural beauty with cultural heritage, all within a protected Regional Natural Park, makes for a unique and enriching experience.

Is it possible to explore the islands within the Gulf as natural monuments?

Yes, the islands are central to the Golfe du Morbihan's natural monument experience. Île aux Moines, known as the 'Pearl of the Gulf,' offers beautiful beaches and woodlands. Île d'Arz provides a wilder, more tranquil escape with unspoiled nature. Both islands feature extensive coastal paths, making them perfect for exploring their unique flora and fauna and enjoying panoramic views of the Gulf.

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Extend your search for the best caves by checking out these guides of the top ones in Golfe Du Morbihan:

BadenSarzeauLarmor-BadenArzonSaint-Gildas-De-RhuysBeignonArradonCampénéacPloerenMauronSaint-LéryConcoretSaint-ArmelNéant-Sur-YvelTréhorenteucLoyatAuganSurzurPorcaroSénéPloërmelTheix-NoyaloLe HézoGuilliersSaint-Brieuc-De-MauronGourhelTaupontSaint-AvéLe Tour-Du-ParcTreffléanPlescopSaint-NolffLa Trinité-SurzurMuzillacDamganQuelneucCarentoirAmbonSulniacGrand-ChampPénestinNoyal-MuzillacArzalCamoëlFérelLauzachMeuconMonterblancElven

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