In the 18th century, the church at Grandchamp was simply a chapel annexed to Coublanc, and was then established as a succursal and vicarial church. In 1803, it was given the title of curial church. The style of the building and the date of the high altar (1834) suggest that Saint-Martin church was built around 1830. Engraved inscriptions at the foot of the jambs of the entrance door recall the start of construction. The elongated building has a single nave with a ceiling, preceded by a tower-porch crowned by a square slate spire. It is flanked at its base by two secondary chapels. The choir consists of an apse with a cul-de-four vault. The western portal, the base of the nave, the quoins and the bays are all of dressed stone, while the rest of the building is of rubble stone.
Eglise Saint-Martin de Grandchamp
