The construction of the Sainte Germaine church was a long project, fraught with pitfalls and uncertainties. It was born from the will of two men: Monsignor Lobbedey and Abbot Constant Hanse, who wanted to open a new place of worship in an outlying district of Calais, linked to the industrial activity of artificial silk. A subscription was launched in 1918 and the first stone was laid on July 29, 1928. It is the work of the architect Julien Barbier (1869-1940). Facing construction problems (marshy soil), its construction extended over a long period and was completed in 1986 with the construction of the belfry by the diocesan architect Mr. Twitchett and the Payeux company in Arras. Inside, the church presents vast open spaces evoking the inspiration of early Christian basilicas. Its interior is quite refined, yet presents a unified decor and a very consistent stained-glass program. These stained-glass windows, the work of Louis Barillet, Théo Hanssen, and Jacques Le Chevallier around 1934, are protected as historic monuments by decree of February 3, 1997. The movable objects (baptismal font, Stations of the Cross) are of fine quality and blend perfectly into the building.
Listed as a historic monument, in its entirety, by decree of October 13, 2021.