Attractions and places to see around Clairfontaine offer a glimpse into the region's historical and natural landscape. This area, particularly within the Aisne department, features remnants of its railway past and significant architectural heritage. Visitors can explore routes built on old railway lines, providing opportunities for cycling and discovering local history.
Last updated: May 11, 2026
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Absolutely perfect railway line cycle path. Lots of rest areas and lots of little things along the way.
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The Ax Vert de la Thiérarche is a former railway line that has been converted into a cycling and walking path. The trail of almost 40 kilometers runs from Guise to Hirson, via Autreppes, and offers a pleasant and peaceful environment for walking, cycling and horse riding. The path runs along the banks of the Oise River and offers beautiful views of the natural and cultural heritage of the Thiérache.
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The Église Saint-Martin de Wimy is a Catholic church located in the municipality of Wimy, in the east of the Aisne department. The church was built in the 16th century and is one of the finest examples of a fortified church in the region. The church has a massive donjon with a square plan and a double-pitched roof, flanked at the front by two enormous towers five meters in diameter, all in brick, except for the base of the towers in sandstone. The rest of the church, which extends behind the donjon, is a parallelogram of stone, with numerous restorations in brick. The church has been listed as a historical monument since 1989.
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Locomobile No. 3003, which can be seen at the entrance to the town of Buire and the former railway depot, was manufactured in 1900 by the construction engineer Emile Salmson. Its operating pressure was 7 bars. Property of the Northern Railway Company, it was used to drive the machine tools of the Hellemes Workshops (North). As the SNCF machine tools became autonomous, she ended her career in 1939. It was Monsieur Raclot, director of the Leclerc center, who offered her second youth to the ECO-RAIL association.
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Le viaduc ferroviaire de OHIS. It is a railway viaduct located in Ohis, a village in the Aisne department, a few kilometers east of Guise 23. The viaduct is an architectural masterpiece and is one of the highest railway viaducts in France. The viaduct was built in 1870 and has a height of 50 meters and a length of 300 meters. The viaduct is still in use and is part of the railway line between Laon and Hirson.
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Stable church that has survived the last harsh centuries.
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The RAVeL Ligne 156 is a cycling route in Wallonia that runs from Momignies to Hastière. The route is divided into two stages: the first stage (27.5 Km) runs from Momignies to Mariembourg (Couvin) and the second stage (30 Km) runs from Mariembourg to Hastière. The route offers many surprises, such as forests, bogs, an open-air museum, the castle of the Princes of Chimay, the Aquascope of Virelles, a beautiful tourist train in three valleys, a river, nature reserves and of course gastronomic specialties and regional breweries. The missing section between the industrial zone (N5) and Mariembourg station will be developed in the short term
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The region around Clairfontaine is rich in history, particularly with its railway heritage and fortified architecture. You can visit the impressive Fortified Church of Saint-Martin of Wimy, a 16th-century religious building known for its massive keep. Another significant historical landmark is the Ohis Railway Viaduct, an architectural masterpiece from 1870 that is still in use today.
Yes, the area offers several family-friendly options. The Old railroad, now converted into a path, is excellent for family bike rides through charming villages and past old train stations. Additionally, the RAVEL Line 156 i/o is a cycling route in Wallonia that offers many surprises, including forests, bogs, and an open-air museum, suitable for families. The Locomobile Salmson No. 3003, a historic steam engine, is also a fascinating stop for all ages.
The region is ideal for various outdoor activities, especially cycling and hiking. You can explore the area on former railway lines converted into scenic paths, such as the Old railroad. For more structured routes, there are numerous hiking trails like the 'Ohis Railway Viaduct – Viaduct loop from Neuve-Maison' and cycling routes like the 'Ohis Railway Viaduct – Old railroad loop from Hirson Écoles'. You can find more details on these and other routes in the hiking guide and gravel biking guide for Clairfontaine.
For a scenic bike ride, consider the Old railroad, which is a former railway line transformed into a cycle path, part of the Euroveloroute N°3. It leads through beautiful villages and past old train stations. Another excellent option is the RAVEL Line 156 i/o, a well-maintained railway line cycle path offering diverse landscapes and rest areas.
Yes, there are several running trails available. For example, you can find routes like the 'Picnic table – Ohis Railway Viaduct loop from Effry' or the 'Running loop from Luzoir'. These trails offer various distances and difficulty levels, allowing you to enjoy the regional landscape while running. More information can be found in the Running Trails around Clairfontaine guide.
Beyond the fortified church and viaduct, you can discover the Locomobile Salmson No. 3003. This historic steam engine, manufactured in 1900, is a fascinating piece of industrial heritage located at the entrance to Buire, offering a glimpse into the region's past railway operations.
Visitors particularly appreciate the well-maintained paths for cycling and walking, especially those built on former railway lines. They enjoy discovering the historical railway infrastructure, the charming villages, and the natural beauty along the routes. The Fortified Church of Saint-Martin of Wimy and the Ohis Railway Viaduct are also highly rated for their historical significance and architectural impressiveness.
While the guide focuses on man-made attractions and converted railway paths, the region is situated within the Aisne department, offering scenic landscapes along its cycling and hiking routes. The RAVEL Line 156 i/o, for instance, takes you through forests and bogs, providing opportunities to enjoy the natural environment.
The best way to explore the historical railway lines is by cycling or walking on the converted paths. The Old railroad is specifically highlighted as being very good for bicycles, leading you past old train stations and through picturesque villages. These routes offer a unique perspective on the region's industrial past.
Yes, the Ohis Railway Viaduct is an architectural masterpiece built in 1870. It stands 50 meters high and 300 meters long and is still an active part of the railway line between Laon and Hirson. It's a significant historical monument in the village of Ohis, in the Aisne department.
While the guide focuses on attractions in the Aisne department, the broader region of Clairfontaine-en-Yvelines (near Paris) features La Chapelle de Clairefontaine, a contemporary art center. However, for the specific Clairfontaine area covered by this guide, the focus is more on historical monuments and outdoor paths rather than dedicated art spaces.
The cycling paths, particularly those converted from old railway lines like the Old railroad and the RAVEL Line 156 i/o, are generally very good and well-suited for bicycles. They typically offer relatively flat and smooth surfaces, making them accessible for various skill levels.


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