Maginot Line

L'ouvrage du Four-à-Chaux was one of the gros ouvrages or large artillery works of the French Maginot Line. Yet almost nothing of it can be seen above ground.

Bunker 'Ermitage Sud' was part of the Maginot Line, a series of fortifications erected by the French army along its border after the German attack during World War I.

At the foot of the French side of the Zwarteberg lies a series of bunkers from the Maginot Line, including this example from 1938.

In 1926, the French Ministry of Defense unveiled plans to fortify the country's eastern borders against possible surprise attacks, such as during the Franco-Prussian War in 1870.