Dating back to the Middle Ages, the Church of Saint-Gal is a Gothic building constructed around 1230–1240, closely linked to the history of the village and its parish. Its architecture reflects several periods of construction, featuring a medieval chancel and sections that have been altered over the centuries.
With an elongated plan, it comprises a three-aisled nave with five bays vaulted with ribbed vaults, a choir with a single bay also vaulted with ribbed vaults, and a flat chevet. This architectural ensemble displays remarkable uniformity, characteristic of 13th-century Gothic architecture.
The base of the bell tower dates from the 13th century, whilst its upper storeys and stair turret were rebuilt in the 19th century. The bell tower is roofed with slate. A bell dating from 1821 bears witness to the alterations made after the Revolution.
The church was listed as a Historic Monument in 1909, thereby recognising its architectural and historical significance.
Eglise Saint-Gal de Luzy-sur-Marne