Château d'Herbeumont, Medieval castle ruins in Herbeumont, Belgium.

Château d'Herbeumont is a castle ruin perched on a rocky hilltop above the Semois River valley. The remaining structures include several towers and defensive walls built from stone that demonstrate medieval military construction techniques.

Herbeumont became a separate lordship in 1268, when Jehan de Rochefort built the castle as the seat of his power. The fortress was besieged by French troops under the Duke of Nevers in 1558 and repeatedly damaged during the Thirty Years' War. On 21 August 1657 Marshal Henri de La Ferté-Senneterre's troops took and burned it, after which it was abandoned.

Four families held Herbeumont in succession: Orjo (1268–1420), La Marck-Rochefort (1420–1544), Stolberg (1544–1574) and Löwenstein (1574–1796). The castle was their seat of power, and the village grew around it. The name Herbeumont refers to the wooded hill on which the fortress stands.

You can reach the site via Rue du Château in Herbeumont with nearby parking available. The ruins are accessible for self-guided exploration, and guided tours in multiple languages are offered.

The castle stands on a schist knoll above a long meander of the Semois known as the Tombeau du Chevalier, more than 100 m below. The site was levelled to widen a plateau for the fortress, built in a single campaign after 1268.