Fort de Seclin, Military fort and museum in Seclin, France

Fort de Seclin is a military fortification with a trapezoidal layout and central artillery position in northern France. The complex includes barracks, support buildings, and a defensive ditch, now arranged to display weapons and military equipment from different periods.

The fort was built between 1873 and 1875 as part of a defensive network protecting the region. During World War I, German forces occupied it and used it as a supply depot.

The fort houses military artifacts and personal items showing how soldiers lived and worked here over time. Visitors can see the daily conditions of garrison life through preserved rooms and equipment on display.

The fort stands south of Seclin, about 9.5 km from Lille, on a rise in a 100-hectare plain. Visitors enter through the arched porch into the central courtyard, with the two-level barracks facing it. The site is run by a private preservation association that opened a museum there in 2003; paths cross turf-covered ramparts and old masonry.

The fort's entrance still carries the name "Duhoux", given by Minister of War Georges Boulanger in 1887 after General Charles François Duhoux, who defended Lille against the Austrians in 1792. A stone cartouche reads "Anciennement fort de Seclin".