Construction of dungeon XIIe siècle (≈ 1250)
Feudal donjon still partially visible.
XVIe siècle
Construction of the Spanish compound
Construction of the Spanish compound XVIe siècle (≈ 1650)
Modernisation by the Spaniards, Porte de Mons.
XVIIe siècle
Rehabilitation of fortifications
Rehabilitation of fortifications XVIIe siècle (≈ 1750)
Addition of bastions like that of France.
15 mai 1944
Registration of the Gate of Mons
Registration of the Gate of Mons 15 mai 1944 (≈ 1944)
First official protection of the site.
23 juin 1981
Ranking of feudal dungeon
Ranking of feudal dungeon 23 juin 1981 (≈ 1981)
Protection of medieval remains Place Guillemin.
23 juin 1995
Land registration and remains
Land registration and remains 23 juin 1995 (≈ 1995)
Protection extended to all fortifications.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Key figures
Information non disponible - No character cited
The source text does not mention any named historical actor.
Origin and history
The fortifications of Avesnes-sur-Helpe are a defensive whole whose origins date back to the Middle Ages. A 12th century dungeon and vestiges of the medieval enclosure have been discovered since 1975. These elements testify to the strategic importance of the city from this time on, although few precise architectural details are kept for this period.
In the 16th century, the Spanish, then masters of the Spanish Netherlands, built a new enclosure to modernize the city's defences. These fortifications were rebuilt in the 17th century, with elements still visible today, such as the Porte de Mons, the bastion of the Reyne, or the bastions of France and Saint John. This work reflects the evolution of military techniques and the conflicts of the time, particularly the Franco-Spanish wars.
Protected remains include a variety of features: casematized bastions, half moons, ditches, and counterscarps. The Gate of Mons, classified in 1944, and the remains of the feudal dungeon, classified in 1981, illustrate the superposition of the epochs. Other parts, such as the water entrance lock or guard corps, were listed in 1995, highlighting the heritage richness of the site. These fortifications thus combine medieval heritage and adaptations of modern times.
The property of the fortifications is now shared between public (municipal, departmental) and private actors (corporations, associations). Their varying state of conservation, noted as "a priori satisfactory" (level 7/10), makes it possible to envisage tourist or cultural valuations. However, their access remains conditional on their status as a mixed property, without clear indication of the possibilities of visitation or current use.