Best natural monuments around Kortenberg provide varied natural landscapes and historical sites. The region features significant deciduous forests, nature reserves with rugged terrain, and protected woodlands. These areas offer opportunities to explore diverse ecosystems and natural features.
Last updated: May 14, 2026
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The Duisburg Dolmen Stone is a large historical erratic boulder in Duisburg (a district of Tervuren). It is often associated with prehistoric rituals and may have been part of an ancient burial monument (dolmen), although this has not been proven with certainty. The stone is primarily considered a local archaeological and folklore monument, commemorating the very early settlement of the region.
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A change of scenery guaranteed...but also a sad observation...global warming is causing terrible damage to certain species of trees...visit this arboretum quickly before many trees die 😩😩😩
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Nice location because you can imagine yourself in different parts of the world by the large number of exotic trees that were planted here sorted by their habitat. This allows you to walk from the West Coast of America to China through the different forests that were planted to imitate nature there as closely as possible.
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In 1652, in the middle of the Meerdaalwoud, Lord van Steenbergen had a chapel built on the site where there had previously been a miraculous statue of Mary who cured people suffering from marsh fever.
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Regardless of how many paths, lanes, avenues, and other sunken roads converge here, this place is known as the Zevenster (Seven Star). And in the middle lie those famous stones. They too have a name: together, they form the Duisburg Dolmen Stone. Specifically, it refers to three remaining fragments of this Dolmen Stone, which originally, in their unbroken state, had a diameter of approximately 2.45 meters. The stone (a chunk of quartzite, or compressed sandstone) was unearthed in 1883 in a field near Duisburg. Locals initially thought it was an impacted meteorite, which subsequently earned it the name "dry thunderstone." After considerable debate, it is now believed to be polishing stones. So, no remains of a megalithic monument, although several Stone Age artifacts have been found in the Sonian Forest. The stone was unbroken when it was found. This happened during its transport to the Warande Park or the Warande (Tervuren Park) here, where it was brought by horse and cart in 1897 and was a showpiece at the World's Fair—although the 267 Congolese who were forcibly brought to Belgium to be exhibited as animals in a zoo that same year likely attracted more attention. The Zevenster itself is, of course, a rather special spot with all its avenues and paths converging. You can enjoy it from various benches, including a picnic table and a "wooden throne." Incidentally, the Zevenster isn't that old. In the past, it was entirely laid out in a checkerboard pattern. The redevelopment of the Warande, with a star-shaped instead of checkerboard pattern, took place under Charles of Lorraine in the eighteenth century. Quote: "The Warande itself also received a thorough facelift, and the original checkerboard pattern was changed to a star-shaped layout, with the various avenues converging into the 'Zevenster'." Sources: https://ernstguelcher.blogspot.com/2024/02/dolmen-in-tervuren-en-chaumont-gistoux.html http://www.megalitica.be/megasite/belgie7a.htm https://inventaris.onroerenderfgoed.be/erfgoedobjecten/300554
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Beautiful to walk in any weather. Many paths around here are also bike-free, which is still pleasant for the walker.
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Among the highly-rated natural monuments, you'll find the Geographic Arboretum of Tervuren, known for its vast collection of tree species, and the Dolmen Stone of Duisburg (Zevenster, Sonian Forest), a unique historical and natural landmark where multiple trails converge. Visitors also appreciate Woluwe Park for its rugged relief and diverse trees.
Yes, several natural monuments are ideal for families. The Geographic Arboretum of Tervuren and Woluwe Park offer spacious areas for walks. The Dolmen Stone of Duisburg is also family-friendly, featuring benches and a picnic table. Additionally, the Silsombos is perfect for family walks, especially in early summer when wild orchids bloom, with signposted paths ranging from 2.2 km to 6.2 km.
The region beautifully blends nature with history. The Chapel of Our Lady of Steenbergen and the Minnebron is a significant historical and religious site with a miraculous spring. The Dolmen Stone of Duisburg is a large quartzite stone with local archaeological and folklore significance. You can also explore the Antitank Canal Haacht, a well-preserved defensive structure from WWII, and the Warandebos, which features an intriguing historic ice cellar.
For experienced hikers seeking more challenging routes and breathtaking views, the Molenbeekvallei Nature Reserve is an excellent choice. It features rugged terrain, steep inclines, and dense forests, offering a more strenuous natural experience.
Yes, the Antitank Canal Haacht is noted as dog-friendly, offering trails alongside the canal. Many other natural areas around Kortenberg, such as the Silsombos and Warandebos, also welcome dogs, but it's always advisable to keep them on a leash to protect wildlife.
Kortenberg's natural monuments boast diverse features. The Geographic Arboretum of Tervuren showcases over 400 tree species from around the world. The Silsombos is famous for its wild orchids, especially in early summer, and rich birdlife. The Molenbeekvallei Nature Reserve features ancient coppice woodlands and unique vegetation like Solomon's seal and wood anemone, while the Warandebos offers a rich diversity of flora due to its varied topography.
The region offers a variety of outdoor activities. You can find numerous hiking trails, such as the 'Boardwalks of Silsombos' or the 'St. Martin's Church' loop. For cycling enthusiasts, there are routes like the 'Lake in the Park van Tervuren' or 'Ijsbroers Ice Cream Shop' loops. You can explore more options on the Hiking around Kortenberg and Cycling around Kortenberg guide pages.
The best time to visit depends on your interests. Early summer is particularly beautiful for the Silsombos, as its marshy grasslands burst with wild orchids. Spring and autumn offer pleasant temperatures and vibrant foliage for general walks and hikes. The Geographic Arboretum of Tervuren is freely accessible from sunrise to sunset year-round, offering different beauty with each season.
The Chapel of Our Lady of Steenbergen and the Minnebron is noted as wheelchair accessible, allowing visitors to experience this historical and natural site. For other areas, it's recommended to check specific trail conditions, as some natural reserves may have uneven terrain.
The Silsombos is known for its rich birdlife, and visitors might even spot roe deer. The Molenbeekvallei Nature Reserve, with its diverse flora, also supports a variety of animals. Keep an eye out for beavers near the Antitank Canal Haacht.
Yes, the Silsombos offers three signposted paths, with the shortest being 2.2 km, making it suitable for easy walks. The Geographic Arboretum of Tervuren and Woluwe Park also provide extensive, generally accessible paths for leisurely strolls amidst nature.
For the Silsombos, parking is available near the starting points of the signposted paths, often close to nearby churches or 't Silsomhof. For other natural monuments, parking availability can vary, so it's advisable to check specific location details before your visit.


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