The church (11th to 16th centuries) features Flamboyant Gothic and Renaissance styles.

In 1282, Saint-Jacques church was established as a parish by Guillaume de Flavacourt, Archbishop of Rouen.

In the 14th century, the tower and chapels located on either side of the great nave of the choir were raised, except for two of them which were part of the church's original plan.

[1][2][3] Inside, the Treasure Chapel is decorated with a frieze called des sauvages revealing the various nations discovered by Dieppe's navigators and sailors.

At the request of Jean Ango, patron of the church in the 16th century, the artist depicted various scenes from the life of the natives: a procession of celebrations and dances, war episodes, which many archaeologists and scholars came to observe.