La charmille du haut Marêt walks

The Ninglinspo is that Walloon stream described by some tourist organisations as ‘mountainous’ and which all Belgians and Dutch people rush to come and admire. So, yes, certainly, it is picturesque and as wild as you could wish for, with footbridges, waterfalls and glacial potholes known as the Baths of the Naiads, Diana, Hermes, the Otter, the Stag, etc... but frankly, there is nothing mountainous about it.Above all, go for a walk there during the week, as weekends, public holidays and school holidays are best avoided if you appreciate peace and nature.The second main point of interest is the arbour planted in themid-19th century on the edge of his Haut-Marais estate. Despite being partially destroyed—by more than 40%—after German tanks passed through in 1940, it remains the longest in Europe, still stretching for 573 metres.

The Charmille du Haut-Marais, dating from the 19th century, is now listed by the Royal Commission for Monuments and Sites.The arbour was built in 1855 by J.R. Nys, a rentier and owner of the estate. It is 573 metres long and consists of around 4,500 hornbeams planted on either side of a pedestrian walkway carved into a tunnel of vegetation, which was very popular at the time.