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Heritage classified

Key figures

Origin and history

The church of Our Lady of the Assumption of Neuilly-Plaisance was built in the 2nd quarter of the 20th century (1932) on the plateau of Avron, a place historically dedicated to Saint Mary since the 17th century. Originally, this site housed a hamlet that disappeared between 1634 and 1649 when a castle was built. At the beginning of the 20th century, the plateau, devoid of a place of worship, became an issue for the Catholic Church, anxious to rechristianize the Parisian suburbs then marked by communist influence (the "red belt"). The initiative was led by Abbé Ernest Laforge, who convinced Bishop Gibier of Versailles in 1926 to build a church. A wooded land with a pond was acquired in 1928 thanks to a local subscription, laying the foundations of the project.

The works, entrusted to architect Henri Cornus, began in 1932 in a context of ideological tension. The style of the building, inspired by the church of Notre-Dame du Raincy, combines bricks with reinforced concrete, with glass windows signed by Louis Barillet and claustras in concrete. The bell tower, flanked by bell towers and surmounted by a quadrangular arrow, dominates a unique nave with four spans. The church was erected on thirty concrete piles that were buried to the gypsum, due to the unstable nature of the basement. Its furniture, such as the Way of the Cross in mosaic (Leon Guillemaind) or the statues of the Virgin (Georges Serraz) and the Sacred Heart (Charles Jacob, inscribed in the Historical Monuments), reflects an exceptional craft.

Inaugurated as a parish in 1958, the church also symbolizes a memorial heritage: an oak planted in 1880 in front of the building commemorates a battle of the 1870 war that occurred there. The facades, roofs, stained glass and furniture were classified in 2004, highlighting their heritage value. The project received the support of Catholic intellectuals such as François Mauriac, Paul Claudel and André Maurois, illustrating his cultural and religious anchor in the inter-war period.

Architecturally, the church stands out for its broken arched tripartite bay, decorated with a concrete net designed to accommodate stained glass windows. Inside, the 26 stained glass windows of Barillet, embedded in cement, interact with mosaics and sculptures to create a modern and sacred atmosphere. The bell tower, connected by a bridge to an access turret, embodies a functional and symbolic aesthetic, typical of the religious constructions of the era.

The building is part of a broader dynamic of spiritual reconquest in the face of the growing secularization of working-class suburbs. Although not related to the Work of the Cardinal's Buildings (1931-1939), its construction anticipates these efforts by offering a place of worship accessible to a population undergoing social change. Today, the church remains a testimony to the religious architecture of the 20th century and its role in the urban history of the Seine-Saint-Denis.

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