Best attractions and places to see around Saint-Martin-Du-Frêne, a commune in the Ain department of eastern France, offer a mix of natural landscapes and historical sites. The region is characterized by its proximity to the Jura mountains, providing opportunities for outdoor activities and scenic views. Visitors can explore glacial lakes, plateaus, and significant man-made structures that highlight the area's heritage. The surrounding area presents a variety of attractions for those interested in nature and local history.
Last updated: July 6, 2026
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pretty little stone viaduct with 2 superimposed lanes, one for cars with 6 arches and one for the train with 11 arches. Atypical.
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Pretty little viaduct which is a real must-see!
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Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical
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Definitely worth a visit, you simply have to include this double-decker bridge in your itinerary.
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The Col de Bérentin connects the Valserine Valley to the Retord Plateau, passing through the beautiful Jura forests. Its ascent is gradual and the road is little traveled.
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Unfortunately I was unlucky with the weather, but even as I drove past the place looked very nice, lots of grass and a place to swim.
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Second pass for today. Pass elevation 1144 m above sea level. Long climb, basically from Saint Germain to here. A total of about 700 m elevation gain and 12 km. The gradient is only 4-6%, but with 20 kg of luggage, everything is difficult ;) Here, too, the weather was still quite cool in very early April. Partly rain, partly windy.
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Rest after a 12 km climb from Saint-Germain-de-Joux.
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The region offers several beautiful natural spots. You can visit Lake Nantua, a glacial lake known for its sapphire and emerald waters, perfect for scenic walks. The Plateau de Retord provides a mix of wide-open spaces and wooded areas, ideal for hiking and cycling, with potential views of Mont Blanc on clear days. Additionally, the Col de Bérentin offers a small pass through the beautiful Jura forests.
Yes, the area features notable historical and cultural points. The Cize-Bolozon Viaduct is an impressive railway road bridge, 73 meters high, constructed in 1875. For a glimpse into prehistory, the Cerdon Caves (Grottes du Cerdon) and their Prehistoric Amusement Park are a significant regional attraction. Further afield, the walled town of Perouges is recognized as one of France's most beautiful villages, and Bourg-en-Bresse offers a cathedral and historic town center.
The region is excellent for outdoor enthusiasts. You can enjoy hiking around Lake Nantua or explore the Plateau de Retord by foot or bike. For more structured routes, there are numerous options for road cycling, hiking, and running. You can find detailed guides for these activities, such as Road Cycling Routes around Saint-Martin-Du-Frêne, Hiking around Saint-Martin-Du-Frêne, and Running Trails around Saint-Martin-Du-Frêne.
Absolutely! Lake Nantua is considered family-friendly, offering pleasant walks. The Cerdon Caves and their Prehistoric Amusement Park are also a great option for families. For indoor fun, 10.55 Loisirs & Restaurant provides various entertainment options including bowling, laser tag, trampolines, and a kid's park, making it suitable for all ages.
Visitors particularly appreciate the natural beauty and tranquility. For Lake Nantua, many highlight its stunning sapphire and emerald colors and the pleasant walks it offers. The Plateau de Retord is praised for its fantastic hiking and cycling opportunities, with its mix of open and wooded areas, and the breathtaking views of Mont Blanc on clear days. The Cize-Bolozon Viaduct is noted for its impressive engineering and the magnificent views it provides over the Ain river.
Yes, there are several easy walking options. The area around Lake Nantua offers gentle paths, such as the 'Lake Nantua – Lake Nantua loop from Port' which is rated as easy. Additionally, a Really quiet road along the Ain river, part of the Ain à Vélo cycle route, provides an easy and pleasant stroll with interesting rock formations and flora.
While specific wild swimming spots are not detailed, Lake Nantua is a glacial lake, and Ile Chambod, located on the banks of the Ain river, offers various activities that might include water-based recreation. The Dombes region, known for its numerous small lakes, is also ideal for fishing and bird-watching.
The warmer months, typically from spring through early autumn, are ideal for most outdoor activities like hiking, cycling, and exploring the lakes and plateaus. During these seasons, the weather is generally pleasant for enjoying the natural landscapes. Winter offers opportunities for snow-related activities, especially at higher elevations like the Station des Plans d'Hotonnes - Plateau de Retord.
While Saint-Martin-Du-Frêne itself is a smaller commune, several nearby towns host local markets. You can find markets in Poncin (13km), Oyonnax (16km), Hauteville-Lompnes (18km), and Bourg-en-Bresse (26km), offering a chance to experience local produce and crafts.
Many natural areas and trails in the region are generally dog-friendly, especially for walks around lakes like Lake Nantua and on the Plateau de Retord. It's always advisable to keep dogs on a leash and check specific regulations for nature reserves or protected areas before visiting.
Beyond the main highlights, consider exploring Les Glacieres de Sylans, which are historic buildings with an interesting past. The Really quiet road along the Ain river offers a peaceful and less-traveled path for cycling or walking, revealing exciting rock formations and unique flora. The small pass of Col de Bérentin also provides a serene journey through the Jura forests.


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