Camp retranché d'Aigremont, Ruins of a military camp in Aigremont, France

The Camp retranché d'Aigremont is a set of ruins in the forest of Tailles d'Herbelay, near the town of Aigremont. It consists of a concrete shelter, trenches, and firing posts, all overgrown by vegetation.

Built in 1914 as part of the Camp retranché de Paris, the site was meant to block enemy advances toward the capital. Most of the defenses were dismantled in 1916, but this center survived because the area saw little development.

The trail through the forest is used by local schools and families to learn about the First World War. The panels explain how the site fit into the defense of Paris, making it a living classroom for the region.

The site is open to the public and can be reached by a marked trail with wooden chips and information panels. The ground is uneven, so wear sturdy shoes and watch your step, especially in wet weather.

The concrete shelter is over 50 meters long and was hidden under a mound of earth. Three brick chimneys still stick out of the ground, a clue to the soldiers' daily life inside.