Plizio Visual Lab
The Lesse is a captivating 89-kilometer-long river in the Walloon Ardennes that flows through one of the most scenic valleys in Belgium. Its source lies near Paliseul, from where it winds its way through dense forests and impressive limestone massifs before joining the Meuse at Anseremme, just outside Dinant. The most remarkable geological feature of the Lesse is its subterranean course: at the village of Han-sur-Lesse, the river completely disappears into a massive limestone cliff, known as the 'Gouffre de Belvaux', and flows underground for nearly two kilometers through the famous Caves of Han. It re-emerges into the daylight at the dramatic 'Trou de Han'. Beyond this spectacular natural phenomenon, the Lesse also flows past the Furfooz Nature Park, featuring steep cliffs and Roman ruins, as well as the fairytale-like Walzin Castle, which sits majestically on a rocky spur directly above the river.
The most pleasant time to visit is Jun–Aug.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 1 | 1 | 5 | 9 | 12 | 16 | 18 | 18 | 14 | 10 | 5 | 2 |
| Rain mm | 83 | 71 | 67 | 51 | 72 | 73 | 74 | 83 | 56 | 69 | 77 | 92 |
Notable places around
Where do you start? We build the route here, with stops and country notes along the way.
© OpenStreetMap contributors · OpenRouteService
Situated right by the Lesse river, the grassy beach of Houyet beckons with its green riparian landscape. Visitors will find a glorious setting here for a quick cool-down during a canoe trip or hike. The relaxed waterside flair is especially popular among local families. On sunny weekends, it pays to find a spot on the meadow early.
