Timeline

Heritage classified

Key figures

Origin and history

The church of the Assumption of Boinville-le-Gaillard, located in the Yvelines, finds its origins in the early 12th century, when the northern collateral, nave and bell tower were built, recognizable by their capitals and modillons. A first religious building, destroyed during the Norman invasions, used to occupy this site. This place of worship, marked by Romanesque architecture, bears witness to the first forms of parish organization in the region, with a mention attested from 1168 as a parish served.

In the 15th century, the church underwent major changes related to the Hundred Years' War: the nave was extended, and an ogival entrance door was added. The southern collateral, arched at that time, reflects the evolution of architectural techniques towards the Gothic, with bays geminated in broken arches and a bell tower pierced by abate-sons. In 1891, architect F. Richault rebuilt the vault of the nave, partially modernizing the structure while preserving its historical character. The church, which was listed as a historical monument in 1950, also preserves the trace of an ancient parish cemetery, destroyed at the end of the 18th century.

The building is distinguished by its three-vessel nave, covered with dogive vaults, and its semicircular apse, characteristic of the revamped Romanesque churches. The built-up bell tower, typical of the southern Yvelines, and the bottoms covered with a roof perpendicular to the central vessel illustrate the adaptation of local architectural forms. The current term, dedicated to the Assumption, is confirmed by the diocesan archives, anchoring the church in the regional Catholic tradition since the Middle Ages.

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