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Origin and history

The Saint-Pierre-aux-Liens d'Osny church, located in Île-de-France, is a composite building whose oldest parts date back to the late 11th century. The transept, partially Romanesque, has maintained a north crusillon unchanged since that time, while the choir and bell tower, of primitive Gothic style, date from the early thirteenth century. These ancient elements contrast with the nave and the lower side, rebuilt at the end of the 19th century in a neo-Gothic style, imitating the 13th century model.

The first church, built around 1100, was partially replaced in the 13th century, but the Roman transept was preserved. The bell tower, typical of the French Vexin, was inspired by that of Nucourt. Over the centuries, the building suffered degradation, particularly during the Hundred Years' War (1432), where the English devastated it without immediate reconstruction. Repairs were limited to adjustments, such as replacing the bedside bay with a Renaissance window in the 16th century.

During the Revolution, the church was closed in 1793 and reopened in 1802, after the requisition of its bells for cannon making. In the 19th century, the nave, in poor condition due to moisture and marshy soil, was demolished in 1895 despite restoration projects proposed by architect Alphonse Simil. A new nave was built in a neo-Gothic style, reusing some original capitals. The bell tower and the choir were listed as historical monuments in 1926 and 1948, respectively.

In 1922, a controversial restoration of the bell tower was carried out, using cement to replace missing carved elements, a practice criticized for its lack of rigour. After arson in 2006, the eastern parts were restored in 2008. Today, the church remains the centre of Osny's parish life, with masses celebrated every weekend.

The building presents a heterogeneous architecture, where the Romanesque and Gothic parts coexist with 19th century additions. The northern crusillon, with its Romanesque capitals, and the choir, decorated with frescoes rediscovered in 2008, illustrate this diversity. The bell tower, the most remarkable element on the outside, is characteristic of the Vexin, with its geminied berries and its unspeakable foothills. Despite the modifications, the church retains a certain archaeological interest, reflecting the stylistic and historical evolutions of the region.

The furniture includes a 14th century Virgin with Child, classified as a historical monument, as well as tombstones in the chapel of the Virgin. The church, which is still active, is the only Catholic place of worship in the commune, with more than 16,000 inhabitants. Its history is marked by periods of decline and rebirth, illustrating the resilience of local communities and their attachment to their religious heritage.

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