The construction of the church of the Holy Trinity of Corny, listed in the general inventory of cultural heritage, dates back to the 16th century for the nave and the bell tower, and the 17th century for the choir. Like many churches in the region, it is built of flint and limestone, with a flat tile roof, except for its slate-covered bell tower. Inside, the visitor can admire the altarpiece of the high altar (paintings: the Annunciation, the Holy Spirit, the eternal Father, God the Son - painted panels: the transfiguration, the Assumption of the Virgin), the statuette of Saint-Louis of the fourteenth century and the carved group of the Trinity of the fifteenth century. The stained glass windows, contemporary, made by Pierre Lafoucrière, date from 1993.