Saint-Pierre de Besanceuil Church, located in Bonnay-Saint-Ythaire in Saône-et-Loire, is a Romanesque religious building built in the 3rd quarter of the 11th century. It embodies medieval ecclesiastical architecture of Burgundy, with a typical structure: a ceiling nave, a span of choir surmounted by a dome on trunks, and a semicircular apse vaulted in cul-de-four. A frame porch and a side chapel (added later) complete the set. The building, still dedicated to the Catholic cult, falls under the Diocese of Autun and the parish of Saint Augustin in North Clunis.
In 1827-1828, architect Roch carried out a major restoration: repair of the structure, extension of the ground of the forerunner, modification of the bays, and installation of a wooden ceiling and a communion table. These works partially transform the inner aspect while preserving the original novel elements. The church is classified as a historic monument by order of 13 May 1950, recognizing its heritage value.
The architectural description reveals remarkable details, such as the dome on trunks — rare technique in Burgundy for this time — and the full cradle of the southern chapel. The site, owned by the municipality, remains an active place of worship and a preserved example of rural Romanesque art. Sources such as the Mérimée base or the Clochers de France site document its history, while visits make it possible to observe its interior, marked by the restorations of the 19th century.
The local historical context underlines the importance of Romanesque churches in the religious and social organization of the Burgundian Middle Ages. These buildings served as spiritual centres, but also as gathering places for often rural communities. The region, under the influence of Cluny Abbey, saw the development of a dense network of churches in the 11th and 12th centuries, of which Besanceuil is a modest but representative example.
The 19th century changes, although controversial for their impact on medieval authenticity, reflect a desire to preserve and adapt to modern liturgical needs. The inscription to the historical monuments in 1950 enshrines this duality between Romanesque heritage and subsequent transformations, while ensuring the protection of the building for future generations.