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Ardennes

Top 20 Natural Monuments in the Ardennes

Best natural monuments in the Ardennes are found across a diverse landscape spanning parts of Belgium, Luxembourg, and France. This region is characterized by lush forests, winding rivers, and impressive geological formations. Visitors can explore a variety of natural features, from dramatic rock formations and cascading waterfalls to ancient forests and intricate cave systems. The Ardennes offers a rich natural environment for outdoor exploration.

Best natural monuments in the Ardennes

  • The most popular natural monuments is Trôs Marets Valley,…

Last updated: April 28, 2026

Bayehon Waterfall

Highlight • Waterfall

The Bayehon Waterfall is a roughly nine-meter-high waterfall near the Belgian village of Longfaye, situated at an altitude of approximately 510 meters. Fed by the Ruisseau de Bayehon stream, it …

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Trôs Marets Valley

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An absolutely idyllic spot on earth: Here you will hike through the beautiful Trô Marêts valley and be accompanied by the sound of the wild river.

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Coo Waterfall

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The waterfall is one of the highest in Belgium with a drop of 15 meters. There is a staircase between the two waterfalls, from where you can admire the impressive …

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Hoëgne River

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The Hoëgne is the most important tributary of the Weser and has its source on the Venn plateau near Baraque Michel. The valley of the Hoëgne is of remarkable botanical …

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High Fens

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A unique heather landscape heralds the High Fens, which one passes on this section. The fascinating high moor area is a gigantic water reservoir, so that there are numerous streams …

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Didada
June 18, 2025, Coo Waterfall

Adventure tours, amusement park, kayaking or just marveling, there can be a lot going on here.

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The Coo waterfall is artificial. Starting from a simple waterfall that appeared in the 15th century, the monks of Stavelot Abbey dug the large waterfall, crossing a meander of the river, to protect the village of Petit-Coo. The fact remains that it is very impressive and at its height of 15 meters is the pride of Belgium.

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Jeff S
November 19, 2023, Hoëgne River

This valley is a wonderful walking adventure...

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Jeff S
November 19, 2023, Hoëgne River

The wonderful sound of rippling water can always be heard...

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The earliest mention of the town of Coo, under the Latin form “collo”, dates back to 1307. A mill, whose existence is documented from 1483, was fed by the water of the Amel. It is very likely that the monks of Stavelot Abbey created a meander along the river to feed the mill and not to create a waterfall, but it is likely that the water sometimes had to overflow and spread over the nearby rocks … Source: http://tourismestavelot.be/de/wasserfall-von-coo

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Beautiful cycle path on the old railway line. Very beautiful landscape with the raised moors. More information: https://de.wikipedia.org/wiki/Vennbahn?wprov=sfla1 and https://de.wikipedia.org/wiki/Vennbahn_%28Radweg%29?wprov=sfla1

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Ingrid
December 26, 2022, Hoëgne River

Done last week, paths perfectly accessible just a small detour just before you get to the Pont de Centenaire. The valley is super nice for walking.

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Perrine
May 31, 2022, Coo Waterfall

The waterfall is one of the highest in Belgium with a drop of 15 meters. There is a staircase between the two waterfalls, from where you can admire the impressive flow of water masses. The falls are a tourist attraction so there are a few cafes nearby.

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Frequently Asked Questions

What types of natural features can I expect to see in the Ardennes?

The Ardennes region is rich in diverse natural features, including dramatic rock formations like Trôs Marets Valley, cascading waterfalls such as Bayehon Waterfall and Coo Waterfall, ancient forests, and unique landscapes like the peat bogs of the High Fens. You'll also find winding rivers like the Hoëgne River and intricate cave systems.

Are there family-friendly natural monuments to visit in the Ardennes?

Yes, several natural monuments in the Ardennes are suitable for families. The Bayehon Waterfall is easily accessible with parking nearby and offers picturesque photo opportunities. The Coo Waterfall is another popular spot with cafes and adventure activities. The High Fens also features numerous trails suitable for families.

What kind of hiking trails can I find near the natural monuments?

The Ardennes offers a wide range of hiking trails. For example, the Trôs Marets Valley provides breathtaking hikes suitable for both families and those with dogs. The Hoëgne River valley features an 8 km hike with footbridges and small waterfalls. You can find many options, from easy strolls to more challenging routes, including those in the easy hikes guide or the waterfall hikes guide.

What is the best time of year to visit the natural monuments in the Ardennes?

The natural monuments in the Ardennes are beautiful in every season. Spring and autumn offer vibrant colors and pleasant temperatures for hiking. Summer evenings at places like the Coo Waterfall can be magical with special lighting. Even in winter, areas like the High Fens offer opportunities for cross-country skiing and serene winter walks.

Are there any natural monuments with historical significance in the Ardennes?

Yes, the Ardennes combines natural beauty with historical elements. The Furfooz Nature Reserve, for instance, offers a blend of stunning views, geological formations, and historical remnants including caves and Roman ruins. The Ardennes Regional Natural Park in France also boasts a landscape shaped by 500-million-year-old geology and is rich in local tales and history.

Can I bring my dog to the natural monuments in the Ardennes?

Many natural areas and trails in the Ardennes are dog-friendly. For example, the hike through the Trôs Marets Valley is suitable for hikers with dogs. It's always advisable to check specific regulations for each reserve or park, but generally, the region welcomes well-behaved dogs on trails.

What kind of wildlife can I spot around the natural monuments?

The Ardennes is home to diverse wildlife. In the High Fens, you might spot rare birds like the capercaillie or the black stork. The Ardennes Regional Natural Park is known for its rich fauna, including the European beaver, black stork, and peregrine falcon. The intricate cave systems, such as the Caves of Hotton, can also be home to bats and other underground life.

Are there opportunities for cycling or mountain biking near these natural monuments?

Absolutely. The Ardennes is a popular destination for cycling. The High Fens offers hundreds of kilometers of mountain biking trails. The region also has dedicated routes for gravel biking, as highlighted in the Gravel biking in the Ardennes guide, which includes routes like the Houffalize MTB Network Loop.

What should I wear when hiking to natural monuments in the Ardennes?

Given the varied terrain and potential for wet weather, sturdy shoes with good grip are highly recommended. Paths, especially around areas like the Hoëgne River, can be covered with roots and become slippery. Layered clothing is also advisable to adapt to changing temperatures, especially in higher areas like the High Fens where it can be colder and windier.

Where can I find cafes or refreshments near the natural monuments?

Some popular natural monuments have amenities nearby. For instance, the Coo Waterfall is a significant tourist attraction with several cafes in the vicinity. The Moulin de Bayehon watermill, near the Bayehon Waterfall, also offers friendly service. For other locations, it's best to check local information for nearby towns and villages.

What are some unique geological formations to explore?

The Ardennes boasts several unique geological formations. The Rock of Omalius (also known as the Rock of Falize or Anticline of Durbuy) is a limestone massif formed over millions of years. The Fondry des Chiens in Belgium's Viroinval region also features stunning and unique geological structures, making it a must-see for those interested in natural geology.

Are there any natural monuments that offer panoramic views?

Yes, many natural monuments in the Ardennes provide spectacular panoramic views. Le Hérou, along the Ourthe River, offers breathtaking vistas of green valleys and the winding river. From the summit of the Rock of Omalius, you can enjoy several trails leading to spectacular views of Durbuy. The High Fens also provides infinite views across its unique landscape.

Most popular routes in the Ardennes

Family-friendly hikes in the Ardennes

Most popular attractions in the Ardennes

Waterfalls

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

LiègeNeufchâteauMarche-En-FamenneNamurBastogneHainautVirtonWalloon BrabantArlon

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