Église Saint-Gervais-et-Saint-Protais de Saint-Gervais, church located in Val-d'Oise, in France

Église Saint-Gervais-et-Saint-Protais de Saint-Gervais is a parish church in the Val-d'Oise whose present fabric dates mainly from the second quarter of the 16th century, in Flamboyant Gothic style, with a Renaissance nave and west facade. Inside, pale stone pillars with moulded capitals carry pointed vaults; a dark wooden crucifix hangs above the rounded archway to the choir, with a carved wooden pulpit on the left and white stone statues on corbels along the right. The Romanesque bell tower, one storey tall and almost hidden in the roofs, is capped by a stone pyramid.

A chapel was founded in 841 to house relics of Saints Gervasius and Protasius, brought inland for safety from Norman raids; the village then took the name Saint-Gervais. The parish was probably erected in 1119 under the abbey of Saint-Germer-de-Fly, and the first Romanesque church was built around 1150. After the Hundred Years' War, Nicolas III de Neufville, seigneur de Villeroy and governor of the Vexin, financed a near-total rebuilding in the 16th century; the portal was begun by Robert Grappin in 1549 and finished by his son Jean.

The village was formerly called Bercagny; it took the name Saint-Gervais from the two 1st-century martyrs, Gervasius and Protasius, whose relics a chapel built in 841 was meant to shelter from Norman raids. Sunday Mass is now held here only about twice a year, the parish belonging to the West Vexin pastoral sector seated at Magny-en-Vexin.

The church is located in the center of Saint-Gervais and is easy to find. It is open to the public and does not require an appointment, though you should check current opening times as they may be limited.

The Romanesque bell tower keeps only one storey, almost entirely hidden within the roofs, and is capped by one of the fourteen stone pyramids recorded in the Vexin français. Its groin-vaulted base has barely changed since the second quarter of the 12th century and forms the first bay of the liturgical choir.