Acquisition by Pierre de Louvain vers 1445 (≈ 1445)
Reconstruction or overhaul of the castle initiated.
XVIe siècle
Major renovations
Major renovations XVIe siècle (≈ 1650)
Chapel and building is rebuilt.
1918
Partial destruction
Partial destruction 1918 (≈ 1918)
Damage caused by bombardments.
13 juillet 1926
Historical monument classification
Historical monument classification 13 juillet 1926 (≈ 1926)
Official protection of the ruins.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Key figures
Pierre de Louvain - Lord and Owner
Purchased and revamped the castle around 1445.
Origin and history
The castle of Berzy-le-Sec is an ancient castle whose origins date back to the 14th or 15th centuries, with major changes in the 16th century. Located on the delegate commune of Berzy-le-Sec (integrated in Bernoy-le-Château, Aisne), it was partially destroyed during the bombings of 1918, after having been inhabited until that date. Its ruins, classified as historical monuments in 1926, illustrate a quadrangular enclosure flanked by turrets, typical of medieval defensive architecture.
The castle was acquired around 1445 by Pierre de Louvain, the lord who undertook his reconstruction or reshuffle. The building, organised around a central courtyard, had significant defensive elements: a third-point door topped by a mâchicoulis, a harrow, and a drawbridge system. A 16th-century chapel, vaulted in dogive crosses, symbolically protected the entrance, while an oriental building, better preserved, preserved traces of rectangular windows added later.
The current remains reveal a 40 × 50 metre enclosure, with angle turrets and foothills strengthening the structure. The north side, now extinct, contrasted with the east side, preserved. A courtyard, of which only traces remain, lay in front of the castle, facing potential attacks. A sculpted medallion, representing partial coat of arms (three twins to be senestrated), came from the castle and is now preserved in the museum of Soissons.
The architecture of the castle combines medieval characteristics (mâchicoulis, assommoir, ditches) and renaissants (extended windows, decorated chapel). Materials, such as carefully fitted limestone, emphasize the care taken to build it. The damage suffered in 1918 frozen the site in a state of ruin, offering a crude testimony of its architectural evolution over nearly five centuries.
Archaeological and historical studies, including those of Jean Mesqui and Christian Corvisier, have documented his history. The castle illustrates the transformation of seigneurial residences in Île-de-France and Picardie, between defensive and residential functions. Its classification among historical monuments in 1926 allowed the preservation of its remains, now accessible near the Romanesque church of Berzy-le-Sec.
