Fort Ducrot, Military fortress in Mundolsheim, France.

Fort Ducrot is a military fortress in Mundolsheim featuring a dry moat and multiple underground passages. These defensive structures demonstrate advanced military engineering from the 19th century with layered protection systems.

Built after Strasbourg's fall in 1870, Fort Ducrot was one of fourteen artillery forts ordered by General von Moltke and designed by Hans Alexis von Biehler. First named Feste Mundolsheimer Kopf, it became Feste Podbielski on 29 August 1882, then took its current name after 1918. In 1936 it was integrated into the Maginot Line, with a 2.50-metre reinforced concrete shell added to its rear facade.

The fort was first named Feste Mundolsheimer Kopf, then Feste Podbielski on 29 August 1882 for Prussian general Theophil von Podbielski. After 1918 it took the name of General Auguste Alexandre Ducrot, who commanded the division mobilised at Strasbourg in 1870. Wall frescoes from the 1939-1940 occupation survive inside.

The fortress is maintained by the municipality of Mundolsheim while a dedicated association called Les amis du fort Ducrot has conducted ongoing restoration work since 2010. Visitors should be aware that active restoration efforts may affect access to certain areas.

The fortress was part of an ambitious plan for 36 fortifications around Strasbourg, but only 14 were ultimately constructed. This incomplete defensive network reveals the strategic challenges and constraints that shaped military planning of that era.