Best natural monuments around As offer a diverse landscape ideal for exploration. The region's terrain features a mix of heathland, forests, and unique geological formations like sand dunes and lakes. These areas provide opportunities to experience the natural beauty of As. The landscape is well-suited for various outdoor activities, allowing visitors to discover its natural heritage.
Last updated: June 26, 2026
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Cycling between the terraces, also known as cycling over water, is a cycling project that opened to the public in September 2024. It is a pontoon cycle/footpath across the Große Plas (Great Pond) between the waste heaps at resort Terhills. It is a new addition to the series of special cycling projects previously realised in the cycling paradise of Limburg (such as cycling through the water (Domain Bokrijk), cycling through the heathlands (north of Zutendaal), and cycling through the forests (Bosland National Park)).
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The Teut gives you colorful fun...
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A great example of cycling tourism by Visit Limburg, a unique experience that will leave you speechless.
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must be beautiful when the heather is in bloom
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Nice location and beautiful view from the pontoon bridge. With the current high water level, wear waterproof shoes. Up and down through the water 😀
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Great viewpoint on top of the slag heap, the walk there is good for your fitness.
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You literally walk over the water, and this route also provides a quicker connection between the long slag heap and the twin slag heap.
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You (almost) forget that you are actually standing on an old industrial site. After all, Hoge Kempen National Park is largely located where the Eisden mine was located. After the mine closed in 1987, it was decided to preserve the original buildings. Because the area was cleaned up after the mine closed in 1987 and nature was then allowed to take its course fairly freely, Terhills has become a home to various butterfly species and plants. The area includes two pitheads, three overgrown mine slag heaps, extensive ponds, marshy areas, creeks and woodland.
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The region around As is characterized by a diverse landscape, including extensive heathlands, serene lakes, and unique geological formations like sand dunes. You can experience cycling over water at Cycling Across the Floating Bridge – Nationaal Park Hoge Kempen, or marvel at the land dunes and panoramic views from Oudsberg Dune. The Mechelse Heide — Lakes and Sand Dunes also offers a mix of heathland, lakes, and pine forests.
Yes, several natural monuments around As are suitable for families. Cycling Across the Floating Bridge – Nationaal Park Hoge Kempen offers a unique and engaging experience for all ages. The Mechelse Heide — Lakes and Sand Dunes and Oudsberg Dune are also great for family outings, providing open spaces for exploration and beautiful scenery.
Many visitors recommend coming in August, especially to places like the Mechelse Heide — Lakes and Sand Dunes, when the heather is in full bloom, creating a stunning purple landscape. However, the diverse terrain of forests, lakes, and dunes offers beauty throughout the year, with each season bringing its own charm.
The natural monuments around As offer impressive panoramic views. From View of the Grote Plas from Terhills, you can enjoy a vast panorama over a large lake, set against a backdrop of transformed industrial landscapes. Oudsberg Dune provides a beautiful panorama of heather, sand, and a surrounding forest belt from its summit.
Absolutely! The region is well-suited for cycling. A highlight is Cycling Across the Floating Bridge – Nationaal Park Hoge Kempen, where you can cycle directly over the Grote Plas. For more cycling adventures, explore the various routes in the area, including those found in the Cycling around As guide.
Beyond exploring the natural monuments themselves, the As region offers a variety of outdoor activities. You can find numerous routes for mountain biking, running, and general cycling. Check out the MTB Trails around As, Running Trails around As, and Cycling around As guides for detailed route information.
The Hoge Kempen National Park plays a central role in the natural monuments around As. Several key sites, such as Cycling Across the Floating Bridge – Nationaal Park Hoge Kempen and View of the Grote Plas from Terhills, are located within or are part of this national park. It's an area transformed from an industrial past into a thriving natural habitat, offering diverse landscapes from lakes to slag heaps.
Yes, the region boasts significant heathlands. The De Teut and Tenhaagdoornheide Nature Reserve forms the largest heath area in Central Limburg, covering approximately 2,000 hectares. It's a beautiful place to experience the unique flora and open landscapes of the region.
Visitors frequently praise the beautiful surroundings and the unique experiences offered. Many highlight the 'endless walking' opportunities in areas like the Mechelse Heide — Lakes and Sand Dunes, and the 'unique experience that will leave you speechless' at the Floating Bridge. The transformation of industrial sites into stunning natural habitats, as seen at Terhills, also leaves a lasting impression.
Yes, the As region is home to unique land dunes. The Oudsberg Dune is a prominent example, featuring impressive sand dunes surrounded by forests and fens. The Mechelse Heide — Lakes and Sand Dunes also incorporates sand dunes into its diverse landscape of heathland and pine forests.
Yes, the region has successfully transformed former industrial areas into beautiful natural spaces. The View of the Grote Plas from Terhills is a prime example, located on an old industrial site that has been cleaned up and allowed nature to reclaim, now home to diverse plant and animal life.


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