Best natural monuments around Herstal include diverse natural features and scenic areas. The region offers opportunities for outdoor recreation and appreciating local nature, with areas like arboretums and themed walking trails. Its landscape provides a mix of historical interest and natural beauty, making it a destination for exploring the outdoors.
Last updated: May 17, 2026
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It's a small but valuable reserve consisting of calcareous grasslands, scrub, and former quarry and slope areas. Thanks to the calcareous soil, rare plants such as orchids and thyme thrive here, and butterflies and insects abound. It's a quiet, sunny spot where nature has slowly reclaimed the old quarry slopes.
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Bridge connecting two wooded promontories between Ninane and Chaudfontaine.
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The Devil's Bridge is really beautiful, built from many stones that are neatly placed next to each other. It is located along the Chemin du Bois, which runs from Monté de Chaudfontaine to Ninane. There is also a bench where you can rest for a while.
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Chaudfontaine is known for its thermal baths at the Château des Thermes, a remarkable place where you can enjoy thermal water in an exceptional setting. It features an outdoor thermal bath at 32°C, a thermal pool, whirlpools, saunas, a hammam, relaxation rooms, infrared cabins, and more. A dream place to relax! Source: https://www.visitardenne.com/de/das-beste-der-ardennen/must-see-reiseziele/staedte-und-dorf/chaudfontaine
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Its calamine-rich formation dates back to the time when the steelworks in the valleys of the Vesdre and the Ourthe released heavy metal fumes (zinc and lead) into the atmosphere, which were carried by the prevailing winds to the surrounding hills. This pollution resulted in impressive landscapes and a unique biotope. The large grassy areas are interspersed with gnarled oaks and a few birches, giving them a particularly remarkable "savannah" appearance. Source: https://payschantoire.natagora.be/nos-reserves/bois-les-dames
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Located in the municipality of Chaudfontaine (Ninane), directly opposite the "La Rochette" nature reserve, this vast calamine-rich heathland offers an exceptional landscape. It is classified as a site of great biological interest (SGIB) and is part of the Natura 2000 network.
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Built of dry stone on the foundations of slate cliffs, it probably dates, according to tradition, to the construction of the railway in 1830 or during the development of the first hiking trails. The bridge is associated with a legend involving farmers from the hamlet of Ninane and the other surrounding hamlets who made a pact with the devil. Source: Signpost
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Heyoule, also called after its founder, Charles Tihon, is a nature reserve east of Eben. The area covers more than 3.8 hectares and is managed by Natagora. It is the first nature reserve that was established on the Belgian part of the Sint-Pietersberg in 1973. There are several former flint quarries and calcareous grasslands are also found there. These are home to rare plant species, including bee orchid and green night orchid. Southern insect species, including solitary bee species, are also found there. Bats live in the former quarries. Furthermore, badger and natterjack toad can be mentioned.
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Herstal offers a variety of natural features. You can discover the unique biotope of the Savanna at Bois-les-Dames, a vast calamine-rich heathland resulting from an industrial past. The region also features impressive underground galleries at the Thier de Lanaye Underground Quarries, which serve as a significant wintering center for thousands of bats. Additionally, the Confluence of the Ourthe and the Meuse offers a scenic spot where two major rivers meet.
Yes, several natural monuments around Herstal also boast historical significance. The Devil's Bridge (Pont du Diable) is a dry stone bridge on slate cliffs, steeped in local legend. The Thier de Lanaye Underground Quarries, while a natural geological feature, also showcases the region's history of marl exploitation. Even the Confluence of the Ourthe and the Meuse is a historical site, notably for its role in the Battle of Liège during World War I.
The landscapes around Herstal are diverse. You'll find the unique 'savannah' appearance of the Savanna at Bois-les-Dames, characterized by grassy areas interspersed with gnarled oaks. The region also features riverine landscapes at the Confluence of the Ourthe and the Meuse, and the intriguing underground world of the Thier de Lanaye Underground Quarries. The Heyoule Nature Reserve offers sunny slopes with diverse flora and underground tunnels.
Absolutely. Herstal and its surroundings offer various walking and hiking opportunities. The 'Voie des Botîs' refers to themed walks available in Herstal, providing trails to explore the local landscape. For more structured routes, you can find numerous options in the Running Trails around Herstal guide, which includes routes like the 'Albert I Memorial (Monsin) – Meuse Cycle Path (RAVeL) loop from Herstal'.
Beyond exploring the natural monuments themselves, the area around Herstal is excellent for various outdoor activities. You can enjoy gravel biking, with routes like 'Neuville Woods, Vecquée Woods & Ry-Ponet Landscape Park loop from Liege' found in the Gravel biking around Herstal guide. Running is also popular, with trails such as the 'Bueren Mountain – View of Liège from the Citadel loop from Herstal' available in the Running Trails around Herstal guide.
Yes, there are several cycling routes that allow you to experience the natural beauty of the region. The Road Cycling Routes around Herstal guide features routes like 'Fort Eben-Emael – View of the Albert Canal loop from Herstal', which can take you through scenic areas. The Albert Canal riverside path itself is also popular for cycling.
Many natural areas around Herstal can be enjoyed by families. The Confluence of the Ourthe and the Meuse is considered family-friendly. The arboretum in Herstal also provides a tranquil setting for walks and learning about different tree species, which can be a pleasant family activity. When planning, consider the difficulty ratings of specific trails or highlights.
While specific regulations can vary, many natural areas and trails in Belgium are dog-friendly, often requiring dogs to be on a leash. It's always best to check local signage at specific natural monuments or nature reserves like the Heyoule Nature Reserve for any particular restrictions regarding pets.
The best season to visit depends on your preferred activities. Spring brings blooming flora, especially in areas like the Heyoule Nature Reserve with its orchids. Summer is ideal for longer walks and outdoor activities. Autumn offers beautiful foliage, particularly in wooded areas like the arboretum. Winter can be quiet and atmospheric, especially for exploring sites like the Thier de Lanaye Underground Quarries, which are important for bats during this season.
Parking availability varies by location. For popular sites like the Devil's Bridge (Pont du Diable) or the Savanna at Bois-les-Dames, there are often designated parking areas nearby, especially at trailheads or access points. For more specific information, it's advisable to check local maps or visitor information for each monument.
The time required to explore varies greatly depending on the monument and your activity. A visit to the Devil's Bridge (Pont du Diable) might be part of a longer walk, while exploring the Thier de Lanaye Underground Quarries might involve a guided tour. Shorter visits to viewpoints or the arboretum could take an hour or two, while comprehensive hikes could last several hours.
Yes, several natural monuments double as excellent viewpoints. The Devil's Bridge (Pont du Diable) is noted for its scenic setting. The Savanna at Bois-les-Dames offers an exceptional landscape, and the Confluence of the Ourthe and the Meuse provides a picturesque view where the two rivers meet.
While specific cafes or pubs might not be directly adjacent to every natural monument, Herstal itself and nearby towns offer various options for refreshments and dining. You can find local establishments in Herstal or in the surrounding areas. For more general information about the municipality, you can visit visitezliege.be.


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