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Heritage classified

Origin and history

The Saint-Hilaire church of Saint-Illiers-la-Ville is a religious building whose origins date back to the 12th century, with major modifications in the 15th and 16th centuries. Located in the Yvelines department (78), it embodies medieval and reborn religious architecture in the Île-de-France region. Its inscription as a Historic Monument by order of 20 October 1928 underlines its heritage value, although its precise location remains approximate (level 5/10 depending on the sources).

The structure, owned by the municipality of Saint-Illiers-la-Ville (code Insee 78558), reflects the stylistic evolutions between the Middle Ages and the Renaissance. Available sources (Monumentum, Mérimée base) indicate an address at 5 Rue de l'Épine Marie, but do not specify its current state (open/closed to the public) or any additional functions (rent, accommodation). The lack of details about its sponsors or its detailed history limits the understanding of its past social role.

In the historical context of Île-de-France, parish churches such as Saint-Hilaire served as a spiritual and community centre. In the 12th–12th centuries, the region, marked by agriculture and river exchanges (neighbourhood of the Seine), saw these buildings play a key role in everyday life: Masses, gatherings, and sometimes refuge. Their architecture often mixed Romanesque (XIIe) and Gothic (XVe), with reborn additions (XVIe), as suggested by the periods of construction of this monument.

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