The Fort de Terlincthun was a simple mound of earth surrounded by a stone wall built by Napoleon I between 1806 and 1808.

A Séré de Rivières system fortification was completed on the site in 1879, with three other forts: They are all built on the same pattern (a barracks, a powder magazine, 2 or 3 shelters, 3-6 platforms for cannon and a well) and are surrounded by a stone wall and a dry moat.

During the First World War the fort defended the port of Boulogne-sur-Mer which played a strategic role in supply and in evacuation of the wounded.

The German Navy took possession of the premises, concreted three French emplacements and replaced the weapons with 105 mm guns.

Today, the site is owned by the Conservatoire du littoral and the Association Fort de La Crèche (AFLC) has restored it.