Natural monuments around Aspach-Michelbach offer a blend of natural landscapes and historical significance. The region is characterized by its position within the Vosges Mountains, providing diverse natural features. A primary natural monument is the Michelbach Dam and Nature Reserve, which combines engineered infrastructure with a protected natural habitat. This area is known for its ornithological importance and offers opportunities for walking and birdwatching.
Last updated: May 26, 2026
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Highlight • Historical Site
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The castle was built from 1224, with various extensions until the 16th century. Its initial purpose, in addition to being the residence of the Count of Ferrette, was to monitor the toll which regulated passage into the Thur valley. Its name means the “town of the angel” in homage to Saint Michael, chief of the angels and champion of Good, and it stands at the top of the Schlossberg, the “castle mount. » In 1673, Louis The king called on miners from Giromagny to demolish the castle with explosives. When the dungeon collapses, part of it remains stuck on the side, giving the ruins their current shape. The locals nickname the remains of the castle “The Witch’s Eye” because this dungeon evokes an eye watching over the city, but also in connection with the tumultuous past involving the city in witch hunting. Family walk through the old town offering upon arrival a beautiful view of the town and the surrounding hills.
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A worthwhile destination, good view of the city
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The preservation over the many years is unique
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The “Roche Sermet” is a rock formation located on the Hartmannswillerkopf¹ battlefield. It is located at an altitude of approximately **910 meters**². Hartmannswillerkopf, also known as Vieil Armand, is a pyramidal rocky spur in the Vosges massif, overlooking the Alsace plain from its 957 meters¹. During the First World War, it was a strategic summit hotly contested by the French and German armies¹. Today, the Hartmannswillerkopf is a place of memory, bearing witness to the suffering of the soldiers who fought in the name of their country¹. The German remains encountered on the ground, sometimes quite spaced apart from each other, are witnesses to this historical period¹. Source: conversation with Bing, 05/07/2024 (1) HWK: Vestiges of the Past - e-monsite. https://hartmannswillerkopf.e-monsite.com/pages/hwk-vestiges-du-passe.html. (2) Presentation. https://hartmannswillerkopf.e-monsite.com/pages/presentation.html. (3) The Hartmannswillerkopf | Paths of memory. https://www.cheminsdememoire.gouv.fr/en/hartmannswillerkopf. (4) The Hartmannswillerkopf - Official website. https://www.memorial-hwk.eu/.
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A treat from the Thann Valley. Beautiful asphalt, a clear view of the Grand Balloon 🎈 in the first bends and accessible percentages. Perfect !
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We, the Kemnather Land team, also tortured ourselves like crazy ;-) on our 4-day tour to Lörrach. It was nice!
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A fallen tower as the central photo motif.
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The approach from Bitschwiller-lès-Thann has an elevation gain of 400 meters over 6.2 kilometers. A maximum gradient of 13%. But it is relatively uneven, so it is not that easy to ride.
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The most significant natural attraction is the Michelbach Dam and Nature Reserve. This site combines engineered infrastructure with a protected natural habitat, serving as an important ornithological site and offering a 4 km discovery trail. Other notable natural monuments include the Hartmannswillerkopf National Monument, which blends historical significance with a natural setting, and The Witch's Eye (Engelbourg Castle), a castle ruin offering panoramic views.
Yes, Aspach-Michelbach offers several excellent viewpoints. The Viewpoint at the summit of Vieil Armand provides extensive views of the Vosges Mountains and the Rhine Valley. The Witch's Eye (Engelbourg Castle) also offers a magnificent panorama of the Thann valley. Additionally, the discovery trail around the Michelbach Dam provides scenic views of the Vosges summits like Rossberg and Grand Ballon.
The region around Aspach-Michelbach is ideal for various outdoor activities. You can enjoy walking and birdwatching at the Michelbach Dam and Nature Reserve. For cycling enthusiasts, there are numerous routes, including easy to difficult options like the 'Michelbach Reservoir – A beautiful place...' loop. Runners can explore trails such as the 'Lake Observatory – Lake Michelbach loop'. You can find more details on specific routes in the Road Cycling Routes, Cycling, and Running Trails guides for the area.
Yes, the Michelbach Dam and Nature Reserve is a great option for families, offering an easy 4 km discovery trail suitable for a pleasant walk. The Hartmannswillerkopf National Monument is also considered family-friendly, providing a historical and natural experience.
Many natural monuments in Aspach-Michelbach are intertwined with history. The Michelbach Dam area has historical significance, with records of Germanic chieftain Ariovistus setting up camp there in 58 B.C. The Hartmannswillerkopf National Monument and the Viewpoint at the summit of Vieil Armand are significant First World War sites, featuring trenches and memorials. The Witch's Eye (Engelbourg Castle) is a 13th-century castle ruin, adding medieval history to the natural landscape.
The Michelbach Dam and Nature Reserve is an important ornithological site. It serves as a wintering station for numerous bird species and a breeding ground for others. Visitors can observe various birds, including cormorants, ospreys, and crows, making it a prime spot for birdwatching.
The natural monuments, particularly the Michelbach Dam and Nature Reserve, are accessible year-round. Summer offers guided tours at the dam, while winter is excellent for observing wintering bird species. The panoramic views from sites like the Viewpoint at the summit of Vieil Armand are stunning in various seasons, with autumn foliage or snow-capped Vosges peaks.
Yes, the Michelbach Dam and Nature Reserve features a 4 km discovery trail that is a pleasant and easy walk, taking about 1.5 hours. This trail is suitable for casual visitors looking to enjoy nature without strenuous effort.
Beyond the prominent sites, the region's position within the Vosges Mountains means you'll encounter diverse natural features like mountain passes and rock formations. For instance, Roche Sermet is a historical site set within a natural rock outcrop, offering views and a glimpse into past military outposts. The Hundsruck Pass is another natural feature, popular with cyclists, offering scenic routes through the landscape.
Visitors frequently appreciate the blend of natural beauty and historical significance. The panoramic views from locations like the Viewpoint at the summit of Vieil Armand and The Witch's Eye are highly praised. The well-preserved trenches and memorials at sites like Hartmannswillerkopf offer a poignant historical experience within a stunning natural setting. The tranquility and birdwatching opportunities at the Michelbach Dam and Nature Reserve are also highly valued.
While the Michelbach Dam and Nature Reserve offers free self-guided tours year-round, guided tours are also organized during the summer season by the Thann-Cernay Tourist Office. For specific dates and booking, you can check their official website: tourisme-thann-cernay.fr.
To protect the natural environment and its delicate ecosystem, swimming and pitching tents are not permitted at the Michelbach Dam and Nature Reserve. The area is primarily designated for walking, birdwatching, and enjoying the serene landscape.


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