To the east, the area borders Marck, a commune that developed around a fortress in the 12^th century. Renaud de Dammartin, Count of Boulogne, separated Marck from Calais and Saint-Pierre in 1210. The castle’s history was turbulent: it was burnt down in 1229 and subsequently rebuilt. After the events involving the burghers of Calais in 1347, the English kept a garrison there. Following this period of shifting borders, the Edict of Nantes issued by Henry IV allowed the exiled Protestants to return to the Calais region, and many of them settled in Marck. In the 17^th century, the military was expanded during Louis XIV’s reign with the construction of Fort Vert, erected on piles in the sea to repel attacks by enemy ships.

Following the French Revolution and the ensuing new administrative organisation (1790), Marck was attached to the canton of Calais in 1801. The commune had 2395 inhabitants in 1832. Owing to the proximity of an airfield used by the Luftwaffe, Marck was hit by numerous air raids, which caused destruction and civilian casualties.

Nowadays, Marck has a population of nearly 10,000 people and comprises the hamlets of Fort Vert and Les Hemmes de Marck: ideal places for walks along the wild coast with a nature reserve of 100 hectares, and for recreation with a leisure centre offering many seaside activities (land sailing, mountain biking, horseback riding). In the Aero Club of Calais Marck you can go on a flight between heaven, earth and sea (upon reservation).