Best natural monuments around Couëron offer a diverse natural heritage, characterized by serene landscapes and rich biodiversity. Situated between the Loire River and the countryside, the area is notable for its wetlands and its connection to naturalist painter Jean-Jacques Audubon. Visitors can explore a variety of natural points of interest, from expansive marshes to artificial lakes and riverfront areas. These sites provide opportunities to experience the region's unique ecosystems and historical influences.
Last updated: July 2, 2026
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Park overlooking the extraordinary garden with a clear view of Nantes, the Loire and the west of the island of Nantes. There are children's play areas, a belvedere, sports fields, lawns, beautiful trees and a surprising statue.
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I couldn't shake the stone, but you can try :-) Peaceful site on the banks of the Acheneau River. Wet in wet weather.
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Always accessible from the town of Cheix-en-Retz. But be careful, the next part of the circuit can be flooded in winter.
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Not found where to go up to make it move, but I'll try another time :-)
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Returned to vertical at the beginning of November 2021, this menhir is the highest in Loire Atlantique with its 4.23 meters and its 24 tonnes of granite. Incredible that it took a 120-ton crane to lift the stone, when at the time a single man, admittedly a little wrapped up, carried it on his back. More seriously, this monolith obviously has nothing to do with the Gauls since it was already in place more than 2000 years before their arrival on the scene.
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Located in a beautiful natural site, this pond, in fact an old quarry filled with water, is open for swimming. Be careful, beyond the buoys, the pond becomes very deep and therefore dangerous. It is therefore necessary to supervise the children. There are also children's games, picnic tables and a bicross field on site. NB: entry is payable in summer (with supervised swimming). Apart from the road, several options of paths to get there or from there: The Chemin des Foulques allows you to continue along the slopes towards La Montagne, for fairly committed cycling and passages that will require you to dismount. The path of the Estacade which goes towards the Loire (cul-de-sac) offers several observation posts of the wetlands and their avian fauna. The Chemin de la Mandrine links with the Port Lavigne shipyard and the statues of animals perched in the trees. Finally, the Chemin de la Sangle goes towards Bouguenais. Nice, but you have to climb a long and steep staircase, so not at all compatible with heavy bikes or panniers.
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The Trembling Stone, perhaps a vestige of a megalith, is today lying on the banks of the Acheneau. This very large stone trembles when you climb to a specific place, hence its name the trembling stone.
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Couëron offers a variety of unique natural features. You can visit The Trembling Stone, a large stone known to tremble when climbed in a specific spot. Another interesting site is the Menhir de Haute-Roche, the highest menhir in Loire Atlantique, recently returned to its vertical position.
The Audubon Marsh (Marais Audubon) is an expansive wetland and an ecological haven in Couëron. It supports over 230 bird species, including protected ones like grey herons and storks, and nearly 700 plant species. It's a prime destination for nature enthusiasts and birdwatchers, offering a tranquil environment to observe diverse wildlife.
Yes, Etang de Roche Ballue, an old quarry filled with water, is open for swimming during summer months when supervised. It also features children's games and picnic tables, making it a great spot for a day out by the water.
For scenic views, head to Square Maurice Schwob. This park overlooks the extraordinary garden and provides clear views of Nantes, the Loire, and the west of the island of Nantes. You can also find a belvedere there.
Absolutely. Several natural monuments are family-friendly. Etang de Roche Ballue offers swimming, children's games, and picnic areas. The Trembling Stone and Menhir de Haute-Roche are also suitable for families looking for unique natural and historical sites. The Loire Riverfront also provides parks and pedestrian paths for all ages.
Couëron offers various outdoor activities. You can find numerous running trails, such as the 'Port of Couëron – Couëron Ferry loop', by exploring the Running Trails around Couëron guide. For cycling, routes like the 'Audubon Marsh – Port of Couëron loop' are available in the Cycling around Couëron guide. Mountain biking enthusiasts can check out the MTB Trails around Couëron guide for routes like the 'Port of Couëron – Lake Beaulieu loop'.
Lac de Beaulieu, an artificial lake spanning 18 hectares, is ideal for leisurely walks. It's a central feature of several hiking routes, including the 'Circuit des Naturalistes'. The lake also has observation cabins, enhancing opportunities for bird viewing.
Yes, the Audubon Marsh is historically significant due to its association with Jean-Jacques Audubon, who spent his childhood in Couëron and drew inspiration from these wetlands. You can follow trails with educational panels to identify birds that Audubon himself observed. Additionally, the natural environment surrounding La Gerbetière, Audubon's childhood home, offers a glimpse into the landscape that inspired his early passion for natural history.
The natural monuments in Couëron can be enjoyed throughout the year, but spring and autumn offer pleasant temperatures for outdoor activities and optimal birdwatching opportunities in areas like the Audubon Marsh. Summer is ideal for swimming at Etang de Roche Ballue.
The Loire Riverfront in Couëron offers a dynamic landscape with a fishing and recreational harbor, public parks, pedestrian walkways, and bicycle paths. You can experience a unique riverine ecosystem, including distinctive reed beds, while enjoying scenic strolls or cycling.
Yes, the Jardin Extraordinaire and Misèry Quarry offers a unique park experience. While not very large, it's very original and provides exceptional panoramas with views of the garden, the Loire, and the island of Nantes.
Visitors particularly enjoy the diverse natural heritage, from tranquil waters to scenic overlooks. The community appreciates the opportunities for swimming at Etang de Roche Ballue, the unique geological feature of The Trembling Stone, and the clear views from Square Maurice Schwob. The blend of natural beauty and recreational opportunities is highly valued.


Extend your search for the best caves by checking out these guides of the top ones around Couëron: