The chapel of Grandcourt, built in 1962, is composed of a single four-bayed roughcast nave.
On the right-hand side of the choir stands an adjacent sacristy. On top of the saddleroof is a double pyramidal four-sided spire. The chapel depends of the parish of Ruette.
During the first decades of the 20th century, Sunday services had to be held in different places around the village, hence the need of a dedicated place of worship. Despite its sober style, the chapel is a convivial building: one will not be surprised to see lively and friendly congregations. A large 18th or 19th-century oak crucifix stands in the choir. On the back wall is the statue of Saint Joseph carved by sculptor Bertrand in 1962.