Best lakes around Tréhorenteuc are situated within the mythical Brocéliande forest, a region deeply connected to Arthurian legends. This area features serene natural bodies of water, some of which are historically significant. The landscape offers a blend of natural beauty and cultural heritage. Several lakes provide opportunities for exploration and connection with the region's folklore.
Last updated: June 27, 2026
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Outside of peak hours, it is very peaceful.
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The interior is beautiful and allows for a break during the hike
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beautiful church
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great place
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great place with beautiful colors in autumn
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Beautiful city but beware of tourists in summer because it is very crowded
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Created by monks in the 12th century, Lac au Duc is the largest of Brittany's inland lakes. Its 250 hectares extend between Ploërmel, Taupont and Loyat. Measuring approximately 5.5 km by 500-900 m, Lac au Duc is surrounded by a variety of different natural habitats and wetlands. If you look carefully, you might be lucky enough to see otters, frogs or deer.
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It is in the magnificent forest of Brocéliande that the legend of King Arthur takes its source, between moors and ponds. Here is the wonderful world of the fairy Viviane, Merlin the enchanter and the knight Lancelot.
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The lakes around Tréhorenteuc are nestled within the mythical Brocéliande forest, offering a blend of natural beauty and folklore. You'll find serene waters like Fairies' Mirror Pond, known for its beautiful autumn colors and mystical forest setting. Lac au Duc, Brittany's largest inland lake, features diverse natural habitats and wetlands where you might spot otters or deer. Étang de la Marette is near a geological site showcasing nearly 300 million years of Brittany's history.
Yes, the region is rich in history and Arthurian legends. Paimpont Abbey and Pond is a significant historical site within the legendary Brocéliande forest. Lac de Comper is famously associated with the Lady of the Lake, Viviane, and features the historic Château de Comper, which houses the Centre de l'Imaginaire Arthurien. Étang de la Marette is also close to legendary sites like the Fountain of Youth and Merlin's Tomb.
The Brocéliande Forest offers numerous hiking trails around its lakes. You can explore routes like the 'Val Sans Retour – Fairies' Mirror Pond loop' or the 'Monks' Garden – Barenton Fountain loop', both offering moderate difficulty. Étang de la Marette serves as a starting point for parts of the 'Merlin's Loop'. For more detailed routes and options, check out the hiking guide for Tréhorenteuc.
Absolutely. The area provides various cycling and mountain biking routes. For road cycling, you can find moderate tours like the 'Paimpont Abbey and Pond – Guillotin Oak loop'. Mountain bikers can tackle trails such as the 'Giant's Tomb – Brocéliande Forest loop' or the 'Lake au Duc – View of Lac au Duc loop'. Discover more routes in the cycling guide and MTB trails guide for Tréhorenteuc.
Several lakes are family-friendly. Paimpont Abbey and Pond is a great option, combining historical interest with natural beauty. Lac au Duc is also noted as family-friendly, offering space for various activities. The Brocéliande Forest itself, with its mythical sites, provides an engaging backdrop for family walks.
The region's lakes are beautiful year-round, but autumn is particularly recommended for its vibrant colors, especially around Fairies' Mirror Pond. Spring and summer offer pleasant weather for outdoor activities like hiking and cycling, while the mystical atmosphere of the Brocéliande forest can be enjoyed in any season.
While specific rules for each lake may vary, the Brocéliande Forest generally welcomes dogs. It's always best to keep your dog on a leash, especially in protected areas or near wildlife, and to clean up after them. Many trails are suitable for walks with your canine companion.
While Lac de Comper and Lac au Duc are popular, Étang de la Marette offers a more tranquil and peaceful atmosphere. It's a smaller pond, ideal for those seeking a quiet starting point for hiking trails away from the main tourist spots, while still being close to legendary sites.
Visitors particularly appreciate the blend of natural beauty and the rich Arthurian legends that permeate the area. The peaceful and mystical forest settings, the vibrant autumn colors at Fairies' Mirror Pond, and the historical significance of sites like Paimpont Abbey and Pond are frequently highlighted. The opportunity to connect with folklore while enjoying outdoor activities is a major draw.
Yes, the region boasts significant historical architecture. The superb Paimpont Abbey stands proudly on the edge of its pond. Additionally, the historic Château de Comper, with origins dating back to the 9th century, is located on the edge of Lac de Comper. It now houses the Centre de l'Imaginaire Arthurien, dedicated to Celtic traditions and legends. You can learn more about the Château de Comper on Wikipedia.
The diverse natural habitats and wetlands around lakes like Lac au Duc provide opportunities to see various wildlife. If you're observant, you might be lucky enough to spot otters, frogs, or even deer in the surrounding areas. The Brocéliande Forest itself is home to a rich ecosystem.


Still not found your perfect lake around Tréhorenteuc? Check out the guides of these regions to see even more beautiful places.