ARDENNES · SINCE THE 11TH CENTURY
One Castle, a Thousand Stories
One of the most important surviving medieval fortifications in the Ardennes. A fortress designed for artillery warfare, with five-metre-thick walls, casemates, a barbican, and countless stories hidden within its stones.
Discover the History
1446 · THE HOUSE OF CROŸ
The Splendour of a Fortress
Antoine de Croÿ, Knight of the Order of the Golden Fleece, purchased Montcornet and transformed it into a cutting-edge fortress: a fifty-metre-long mass of stone, three colossal towers, and walls rising twenty metres high.
The castle became one of the major political and cultural centres of the Ardennes, supported by eleven fortified manor houses.
THE AGE OF CANNONS
Built for Gunpowder
As artillery emerged, the castle’s walls were reinforced to a thickness of up to five metres. Casemates, covered passageways, and gunports created a defensive system with no blind spots.
A unique example of how medieval fortifications adapted to the revolutionary weapon of gunpowder.
1961 · A NEW BEGINNING
A Fortress Reborn
Dismantled during the 18th century and later swallowed by brambles, the castle was brought back to life thanks to Abbé Bernard Lussigny and dedicated volunteers, who cleared the site, consolidated the ruins, and reopened it to visitors.
THE VISIT
Highlights of the Castle
From the casemates to the ramparts, from the cistern to the keep: descend into the stone and travel back through time.
Highlight
The Fortified Gate
Counterweighted drawbridge and barbican, guarding an entrance designed as a deadly trap.
Highlight
The Casemates
Vaulted galleries and loopholes arranged to provide overlapping fields of fire with no blind spots.
Highlight
The Great Hall
The coats of arms of the lords and artifacts uncovered during excavation and clearing works.
Highlight
The Courtyard & Ramparts
The gallows of the High Court and panoramic views over the Ardennes valley.
Highlight
The Castle Walk
A thirty-minute walk around the castle leads to its finest viewpoint: the fortress seen from across the valley, rising from its cliff.
Highlight
A Bird's-Eye View
One and a half hectares of ruins spread across the rocky spur.
Highlight
The Underground
Cleared halls and galleries brought back into the light.
Highlight
The Keep
The self-sufficient keep tower, its ice cellar, and its commanding view over the valley.
ARDENNES · SINCE THE 11TH CENTURY
Visitor Information
APRIL 4 - SEPTEMBER 27, 2026
Adult
6€
Teenager (8 - 17 years)
4€
Child (under 8 years)
Gratuit
