Best caves around Oosterzele are predominantly artificial grottoes, many of which hold religious significance. The region features a landscape that supports various outdoor activities, including cycling and walking trails. These man-made cave structures are integrated into local historical sites and natural environments, offering points of interest for visitors.
Last updated: June 30, 2026
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The Aquarium Caves in Ghent were a popular attraction in the Citadel Park, housed in a cave-like structure. These “caves” were part of a miniature amusement park known in the mid-20th century for its exotic aquarium fish and other curiosities. The caves had a mysterious feel, with a combination of artificial rock formations and water features displaying various species of fish. Although once a popular place for families and children, the Aquarium Caves have fallen into disrepair over the years. Today they still exist, but are no longer used as a public attraction. The nostalgia surrounding the caves lives on among many older Ghent residents who still remember the place from their youth.
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The cave first opened in 1879 and had 33 aquariums at the time. Ghent residents came to marvel at freshwater and saltwater fish, but the idea did not last long.
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A somewhat hidden Marian grotto in Heusden, complete with Marian grotto, statue, burning candles, prayer benches, Bernadette and of course the thank you pictures for a favor received. The cave was built in 1933.
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You don't see something like that very often
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This Lourdes cave belongs to the Franciscan monastery (since 1875) that is located behind the Sint-Pieters-Banden and Sint-Berlindis churches. The cave was built on the initiative of August De Rouck, who lived in the country house on the Breivelde Domain and was also one of the most important financiers of the construction of the church. The cave is a beautiful example of so-called cement rustic as it was applied to places of pilgrimage. The entrance gate in the brick wall is trimmed with rockwork. On the ground floor there is a small chapel whose walls and ceiling are covered with imitation of rockwork and stalactites and where a door next to the altar gives access to the monastery. Above this chapel is an artificial 'mountain' with rockwork, largely hidden behind busy vegetation, with a statue of Our Lady in a niche and in front of it a statue of a kneeling Bernadette. On the right wall in the chapel hang a number of ex-votos, objects that serve as a support for supplication and/or as a thank you to God or a saint for a favor received. Source: https://inventaris.onroerenderfgoed.be/erfgoedobjecten/208919
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An artificial grotto dedicated to Our Lady of Lourdes. The people's shrine was built in 1879 in Tournai natural stone, which was transported from the Scheldt in Wetteren by horse and cart. Opposite the cave, seven brick chapels were built in 1954 containing representations of the seven joys of Mary. The domain experienced its peak in the 1950s and 1960s when hundreds of believers attended the solemn May celebrations. In recent years, 'De Rots' has mainly become a place of silence for people who seek solace in religion and nature. After volunteers had refreshed the sanctuary in recent years, a new, wheelchair-friendly access road has recently been constructed with a permeable paving on both sides for parking. The weathered chapel circuit has also been completely renovated.
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The Marian Cave, built in a bend of the Cotthem road in Sint-Lievens-Houtem, is an artificial cave from the Marian year 1954. It is a fairly large elaborate cave with two levels between green plantations. In recent years, the copy of the Lourdes Grotto became overgrown by plants. Stones crumbled and the statues of Mary and Bernadette no longer had any appearance. In 2016, the cave was renovated by volunteers from Okra Oombergen and rededicated by pastor Paul De Neve.
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Beautiful, quiet and green environment. Recommended for cycling or walking with the proximity of Cotthembos and the Oomberg forests.
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While Belgium is known for its natural limestone caverns, there are no notable natural caves directly within Oosterzele. The 'caves' listed in this guide, such as the Our Lady of Lourdes Grotto Breivelde and the Cotthem Grotto, are artificial grottoes, often with religious significance or historical context, rather than geological formations.
The 'caves' around Oosterzele are primarily artificial grottoes, many of which are Marian shrines or historical man-made structures. Examples include the Our Lady of Lourdes Grotto Breivelde, the Cotthem Grotto, and the Lourdes Grotto with Processional Path. These offer a blend of historical, religious, and sometimes natural-feeling environments, but are not natural geological caves.
Yes, many of the grottoes around Oosterzele are considered family-friendly. For instance, the Aquarium Caves in Citadelpark (though no longer a public attraction) and the Our Lady of Lourdes Grotto Breivelde are categorized as family-friendly. They offer interesting historical and cultural sites for a quiet visit.
The grottoes around Oosterzele often have significant historical and religious importance. Many are Marian grottoes, such as the Our Lady of Lourdes Grotto Breivelde, built as places of pilgrimage. The Aquarium Caves in Citadelpark, though artificial, were once a popular historical attraction in Ghent, known for its exotic aquariums.
Yes, the Lourdes Grotto with Processional Path has recently been renovated to include a new, wheelchair-friendly access road, making it accessible for visitors with mobility needs.
Oosterzele offers various outdoor activities. You can find numerous hiking trails, such as those mentioned in the Hiking around Oosterzele guide, including routes like 'Rest bench – Bunker Route Beekvallei loop'. There are also cycling routes available, detailed in guides like Cycling around Oosterzele and Traffic-free bike rides around Oosterzele.
Visitors appreciate the peaceful and authentic atmosphere of these sites. For example, the Cotthem Grotto is described as a 'very beautiful authentic place' and offers a 'beautiful, quiet and green environment'. Many find solace and a connection to history or spirituality at these locations.
The Aquarium Caves in Citadelpark are no longer used as a public attraction and have fallen into disrepair. While they still exist, they are not open for visitors to explore as they once were.
The Het Rotske in Heusden is described as a 'somewhat hidden Marian grotto', offering a quiet and reflective experience away from more frequented paths. It features a statue, prayer benches, and thank-you pictures.
The grottoes, being mostly outdoor or semi-open structures, can be visited year-round. However, for the most pleasant experience, spring and summer offer milder weather and lush greenery, enhancing the serene atmosphere of these sites. Some religious grottoes may have special events or celebrations during May.
While specific trails directly linking to every grotto are not detailed, the region around Oosterzele offers a network of hiking trails. You can explore routes from the Hiking around Oosterzele guide, such as the 'Path through Ettingebos – Windekemolen Balegem loop', which can be combined with a visit to nearby grottoes for a full day out.


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