Best natural monuments around Houffalize are found in the Belgian Ardennes, a region characterized by lush forests, rolling hills, and the winding Ourthe River. This area offers diverse landscapes, including moorland, peat bogs, pastures, and significant schist formations. The natural features provide a setting for outdoor activities and exploration.
Last updated: April 28, 2026
Highlight • Natural Monument
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Highlight • Historical Site
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Built in 1958 to supply the region with drinking water and for the production of hydroelectricity. You can cross the dam and there is a water purification station and a fish ladder.
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Very nice view of the Ourth
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It is a panoramic viewpoint which overlooks the Hérou Felsen and the Ourthe. It is named after François Rémy, French doctor, former director of UNICEF for the Middle East and North Africa. He was also a hiker and explorer passionate about the Ardennes region. He discovered this viewpoint in 1977 and was amazed by its beauty. He wrote in his diary: "I have never seen such a splendid view of the Ardennes. It is like a painting of nature, with the rocks, the river, the forest and the sky. It is a place of peace and harmony, where we feel the presence of God". What do you think ? Do you agree ?
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The highlight is rather on an offshoot of Le Hérou called François Rémy. Le Hérou is another 5 minutes further.
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Viewpoint over the Ourthe from the Hérou ridge.
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The Nisramont dam complex was built in 1958. The intention was actually to create a much larger lake with a dam at the Celtic site of Le Cheslé. Not coincidentally there, because as we will notice during the next stage on the Escapardenne Eislek Trail, the Ourthe is strongly incised here and it is therefore technically ideal to dam even further downstream from that deep incision. The storage capacity is expected to be up to 250 million m³. The current Nisramont dam was therefore built as a temporary project, but more than 50 years later it is still standing.
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Here is a small hut overlooking the Ourthes.
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The region offers several remarkable natural monuments. Among the most popular are the Le Hérou Rock Formation, known for its exceptionally steep rocks and authentic landscapes of the Ourthe River. Another must-see is the View of the Confluence of the Two Ourthes, where the western and eastern Ourthe rivers meet at the Barrage de Nisramont reservoir, offering picturesque scenery.
Houffalize, nestled in the Belgian Ardennes, is characterized by lush forests, rolling hills, and the winding Ourthe River. You'll encounter diverse landscapes including moorland, peat bogs, pastures, woodlands, and significant schist formations. The area is rich in river valleys, dramatic rock formations, and scenic viewpoints.
The natural monuments around Houffalize can be enjoyed throughout the year. Spring brings vibrant greenery and blooming flora, while autumn offers stunning fall foliage. Summer is ideal for water activities on the Ourthe River, and winter can transform the landscape into a 'Nordic' scene with coniferous forests and mist, offering a different kind of beauty for those prepared for colder conditions.
Yes, the region is excellent for hiking. Many trails wind through the deep woodlands and rugged terrain, offering access to natural monuments. For example, the area around Le Hérou Rock Formation has hiking trails with unique features. You can find various routes, including a 14-kilometer path around the Nisramont reservoir, by exploring the hiking guide for Houffalize.
Beyond hiking, the Houffalize area offers a range of outdoor activities. You can enjoy gravel biking or cycling on numerous routes that pass through scenic landscapes. In summer, kayaking or stand-up paddleboarding are popular options at the Nisramont dam. For more details on routes, check out the gravel biking guide and cycling guide for Houffalize.
Absolutely. The Le Hérou Rock Formation offers challenging routes, some even involving ropes and chains, providing an adventurous experience and great views of the Ourthe River. The terrain in the Belgian Ardennes can be rugged, with significant elevation changes, making it suitable for those seeking a more demanding hike.
Many areas are family-friendly. For instance, the View of the Confluence of the Two Ourthes is noted as family-friendly. While some trails, like those at Le Hérou, can be challenging, there are also easier paths and picnic spots, such as those along the Nisramont reservoir, that are perfect for a family outing.
Generally, dogs are welcome on trails in the Houffalize region, but it's always advisable to keep them on a leash, especially in protected areas or near wildlife. Always check local signage for specific restrictions in certain natural monuments or reserves.
Yes, the region combines natural beauty with historical significance. The Le Cheslé Celtic Fortified Settlement is a notable example. This site, once a fortified Celtic settlement, is listed as a 'Major Walloon Heritage Site' and offers a fascinating glimpse into ancient history amidst a natural setting, with reconstructed walls and archaeological traces.
Amenities vary by location. Near the Nisramont dam, for example, you can find barbecue grills and picnic tables along the 14-kilometer path. Parking is generally available at popular trailheads and viewpoints. It's recommended to check specific locations for detailed information on facilities.
The Houffalize region is dotted with numerous viewpoints offering breathtaking panoramas. The View of the Confluence of the Two Ourthes and the Western Ourthe Viewpoint are popular spots. Additionally, the Belvédère de Nadrin offers a vantage point to survey an Ardennes landscape
The Parc Naturel des Deux Ourthes is an immense protected area covering 76,000 hectares, encompassing the deep slopes of the Ourthe Valley. It's significant for its diverse landscape, including moorland, peat bogs, pastures, woodlands, and giant schist formations. The park is ideal for nature lovers, providing numerous hiking trails and protecting the convergence of the two arms of the Ourthe River near the Nisramont dam.
Given the varied terrain and potential for challenging routes, it's advisable to wear sturdy hiking boots or appropriate outdoor footwear. Layered clothing is recommended to adapt to changing weather conditions, and waterproof gear can be useful, especially during wetter seasons. For challenging climbs, consider gloves for ropes or chains.


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