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The Top 20 Caves in Flanders

Looking to visit a cave in Flanders on your next adventure? To help you better plan your next outdoor experience, we’ve collected Flanders’s 20

best caves for you. Based on the experiences of other users, each is a recommendation you know you can trust — so you can better plan your next adventure.

Last updated: October 22, 2025

Lourdes Grotto Oostham

Highlight • Religious Site

The cave was originally built in the nineteenth century in the church of Oostham. In 1934, during the renovation of the church, it was rebuilt outside the church, but during …

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Park Cerckel: Historic Gate, Grotto, and Iron Bridge

Highlight • Historical Site

The park still contains remains of the Franciscan monastery, which settled there in 1228.
The park was later laid out by the brewing family of Cerckel Brewery.
It was opened …

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Grootberg

Highlight • Cave

Here you will find the entrance to the tunnel system called the Grootberg, which is part of the underground marl quarry the Avergat. The quarry was used as a garage …

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Grotto of the Virgins of Brustem

Highlight • Religious Site

The Lourdes Grotto was built by the late Jef Van Dessel, a former Aarschot police officer. He cycled from Aarschot to Lourdes several times.

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Lourdes Grotto Niel-bij-As

Highlight • Religious Site

Here is a Lourdes cave from 1944, built with mesh boulders. There are many benches and candles can be burned. An angel indicates the entrance.
On the other side of …

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Aquarium Caves in Citadelpark

Highlight • Cave

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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Lourdes Grotto Tielt-Winge

Highlight • Religious Site

The cave was built in 1878 at the beginning of the Tieltse Blereberg on a piece of land of approximately eleven acres, by Maria Theresia Van Geertruyden. She was the …

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Grotto of the Immaculate Conception

Highlight • Religious Site

The Lourdes grotto is located at the intersection between the Glaaierweg and a field path. The grotto has been beautifully restored. There are benches, flowers and candles. It is probably …

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Lourdesgrot Eikelberg

Highlight • Religious Site

Here you can take a moment of reflection, sitting on a bench.

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Lourdes Grotto Wiemesmeer

Highlight • Religious Site

The region here was called Hoeverveld, after a farm that was also a resting place for the carriages to Maastricht. One of the residents, Mathijs Thijssens, had a statue of …

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

Wallonia

The Top 20 Caves in Flanders

Lourdes Grotto Oostham

Park Cerckel: Historic Gate, Grotto, and Iron Bridge

Grootberg

Grotto of the Virgins of Brustem

Lourdes Grotto Niel-bij-As

Aquarium Caves in Citadelpark

Lourdes Grotto Tielt-Winge

Grotto of the Immaculate Conception

Lourdesgrot Eikelberg

Lourdes Grotto Wiemesmeer

Other adventures in Flanders

Most popular routes in Flanders

Most popular attractions in Flanders

Get inspired with the komoot mobile app

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