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Heritage classified

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Origin and history

The Saint-Léger de Mouy church, located in the Oise region of Hauts-de-France, is a Gothic building built between the 12th and 13th centuries. Its polygonal choir, dated from the third quarter of the 12th century, and its nave completed before the mid-thirteenth century, form a homogeneous architectural ensemble despite the rough proportions due to an increase in the soil caused by frequent floods of the Therain. The western gate, richly decorated but restored in the 19th century, and the interior elevation on three levels (large arcades, clogged galleries, high windows) testify to its stylistic evolution.

The history of the church remains largely unknown due to the loss of its archives. In the Middle Ages, Mouy was a small village protected by a castle defending the passage of Therain. The original building, probably Romanesque, was enlarged by a Gothic choir around 1160-1175, followed by a transept and a nave around 1235-1250. A hurricane caused the collapse of the central bell tower around 1600, resulting in the reconstruction of the transept vaults and the addition of Renaissance-style side chapels. Ranked a historic monument in 1936, the church was restored after World War II under the direction of Jean-Pierre Paquet.

The interior reveals a nave with three storeys, with vaults redone in the 16th and 17th centuries, mixing flamboyant Gothic and Renaissance styles. The lower sides, on the other hand, kept their original vaults, with double-tore warheads. The choir, of singular elegance, has a seven-paned apse decorated with columns and low capitals, while the transept, without triforium, houses chapels added after the collapse of the bell tower. The furniture includes a 17th-century bell, a 19th-century harmonium and a 16th-century window, classified as historical monuments.

Exteriorly, the western facade, subdivided into three parts, is marked by a triple archvolt portal and a mess rebuilt in the 19th century. The foothills, bows and lancet windows reflect the successive construction phases. The oldest southern crusillon preserves gemelated bays and hooked capitals, while the north crusillon, redesigned, has a rosette and Renaissance elements. Despite restorations and additions, the church remains a major testimony of Gothic architecture in Picardia.

The church of Saint-Léger, today in the heart of the parish of Sainte-Claire de Mouy, illustrates the architectural adaptations linked to the natural (theoretian) and historical constraints (wars of Religion, hurricane of 1600). Its classification in 1936 allowed its preservation, although major work could only be carried out after 1945. The woodwork of the choir, the stalls and the former high altar recall its central role in local religious life, while its classified furniture enriches its historical heritage.

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