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Belgium
Wallonia
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Saint-Ghislain

Top 8 Lakes around Saint-Ghislain

Best lakes around Saint-Ghislain offer a variety of aquatic environments, from significant ecological sites to leisure parks. The region, situated in Wallonia, features diverse landscapes shaped by historical mining activities and natural waterways. These areas provide opportunities for nature observation, active recreation, and exploring historical sites. Visitors can find both natural wetlands and man-made bodies of water within a short distance.

Best lakes around Saint-Ghislain

  • The most popular lakes is Beloeil Castle, a castle that features a large moat…

Last updated: May 19, 2026

Marais d'Harchies-Hensies-Pommerœul Nature Reserve

Highlight • Natural Monument

Like most of the wetlands in the Haine valley, the Harchies-Hensies-Pommeroeul marshes were formed in subsidence caused by mining. The depressions were formed in the mid-1920s and immediately filled with …

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Hyon Waterfall and Ponds

Highlight • Waterfall

It is at the confluence of the Trouille and the Nouvelles river that this waterfall bridge was born. Originally there was a mill, which was turned into a tannery after …

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The Grand Large of Mons

Highlight • Lake

Le Grand Large is an artificial body of water north of the city of Mons. It can be reached via two different canals. The marina is located here. For the …

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The old quarries of the Dendre and Congo are a historic site of exploitation of blue stone, or "small granite", from the 18th century until 1951. Today submerged, they form …

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Lake Bernissart

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Nice fishing lake, very calm

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Popular around Saint-Ghislain

Hiking around Saint-Ghislain

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Road Cycling Routes around Saint-Ghislain

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Tips from the Community

Frederic Merchet
April 25, 2026, Marais d'Harchies-Hensies-Pommerœul Nature Reserve

Attention change of regulation, a part of the reserve is forbidden to bicycles. I saw it this morning.

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Woudy & Yeske
September 21, 2024, Lac de Bernissart

Well-known Carp Fishing Pond. In Spring and Summer way too busy & everyone crammed together

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Lake Bernissart is an artificial pond with an area of 10 hectares, surrounded by wooded areas and wasteland. Created as part of local mining activities, the site is today recognized for its ecological richness, sheltering a diverse fauna and flora, notably rare ornithological and odonatological species.

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The old quarries of the Dendre and Congo are a historic site of exploitation of blue stone, or "small granite", from the 18th century until 1951. Today submerged, they form a vast body of water 4.5 hectares. The site is managed by the Otaries diving club and is home to rich biodiversity with more than 120 species of birds observed. The quarries, integrated into a natural setting, are a popular place for scuba diving and hiking.

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Very nice bike path, apart from the concrete slabs.

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A pond very popular with fishermen.

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Ornithological nature reserve, with magnificent species. Several observation points set up for bird watching. accessible to PMR.

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View over the Grand Large to Mons.

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Frequently Asked Questions

What natural features can I explore around Saint-Ghislain?

The region offers diverse natural landscapes. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is a significant wetland complex, known for its extensive reed beds and rich birdlife. You can also visit the Ancient quarries of the Dendre and the Congo, which are now submerged and form a large body of water with diverse biodiversity.

Are there family-friendly lakes or activities near Saint-Ghislain?

Yes, several spots are great for families. Hyon Waterfall and Ponds offers a tranquil setting with a small lake landscape. The Grand Large of Mons is an artificial lake popular for relaxed cycling on its good paths. Additionally, Dock 79, a leisure park near Saint-Ghislain, features an 8-hectare lake with an aquapark, water ski lifts, treetop adventure courses, and other activities suitable for all ages.

What historical sites are associated with the lakes in this region?

The region's lakes often have historical connections. Beloeil Castle, known as the 'Versailles of Belgium,' features a magnificent moat and gardens. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve was formed from mining subsidence in the 1920s, with visible mine heaps nearby. Hyon Waterfall and Ponds was once the site of a mill and tannery. The Ancient quarries of the Dendre and the Congo are historic blue stone quarries from the 18th century.

Can I go birdwatching around the lakes of Saint-Ghislain?

Absolutely. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve is an exceptional destination for birdwatchers. Over 300 bird species have been observed there, with around 100 having bred in the reserve. There are marked trails and two viewing huts available for observing the local fauna. The Ancient quarries of the Dendre and the Congo also host rich biodiversity, with more than 120 species of birds observed.

Are there hiking trails near the lakes around Saint-Ghislain?

Yes, there are several hiking opportunities. The Marais d'Harchies-Hensies-Pommerœul Nature Reserve offers marked trails for exploration. You can find various hiking routes in the area, such as the 'Pond in the Baudour forest' loops. For more hiking options, you can explore the Hiking around Saint-Ghislain guide.

What cycling routes are available near the lakes?

Cycling is a popular activity around the lakes. The Grand Large of Mons is known for its good cycle paths, making it a popular destination for relaxed rides. You can find various cycling routes, including those around the Grand Large Lake, in the Cycling around Saint-Ghislain guide and the Road Cycling Routes around Saint-Ghislain guide.

Is it possible to swim in the lakes near Saint-Ghislain?

While natural lakes like the Marais d'Harchies are primarily for nature observation and not swimming, the leisure park Dock 79 offers swimming opportunities. It features an aquapark with large inflatable modules on its 8-hectare lake, perfect for swimming and water-based fun.

Are there any wheelchair-accessible paths around the lakes?

Yes, the Marais d'Harchies-Hensies-Pommerœul Nature Reserve is noted as being wheelchair accessible, allowing visitors with mobility challenges to enjoy its natural beauty and birdlife.

What is the best time of year to visit the lakes around Saint-Ghislain?

The lakes offer different experiences throughout the year. Spring and autumn are ideal for birdwatching at the Marais d'Harchies-Hensies-Pommerœul Nature Reserve due to migratory birds. Summer is perfect for active recreation at places like Dock 79 with its aquapark and water sports. Historical sites like Beloeil Castle often have specific opening seasons, so it's best to check their schedules.

Are dogs allowed on trails around the lakes?

Rules for dogs vary by location. For example, dogs are generally allowed in the park of Beloeil Castle but not inside the castle itself. For nature reserves like the Marais d'Harchies-Hensies-Pommerœul Nature Reserve, it's advisable to keep dogs on a leash to protect the wildlife.

Where can I find cafes or pubs near the lakes?

Dock 79, the leisure park, has a modern brasserie called La Sablière with views of its lake. For other locations, amenities might be found in nearby towns or villages. It's recommended to check local listings for specific cafes or pubs close to your chosen lake destination.

What kind of water sports can I do at the lakes?

Dock 79 is the primary destination for water sports, offering an aquapark with inflatable modules and two water ski lifts, including one for beginners. The Belgium Cable Park is also located there. The Ancient quarries of the Dendre and the Congo are managed by the Otaries diving club and are a popular place for scuba diving.

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