In the year 1210, the bishop of Tortosa granted the inhabitants of Lledó the town charter in which the place was named, interchangeably, as castle and town. This referenced castle could be the original construction of this church since the corbels on the outside of the building look like the machicolations of a castle or defense tower. This robust construction with thick ashlar walls and little interior lighting looks, like that of the neighboring town of Arens de Lledó, like a church-fortress. It is a Gothic work built at the end of the first half of the 19th century. XIV. It has a square floor plan with a single nave with a pointed barrel vault and a straight head with a ribbed vault. The Paschal Lamb is represented in the keystone of this vault. It has four side chapels, two on each side and inserted into the wall, three of them with Renaissance motifs. The absence of buttresses and the fact that only one of the chapels protrudes outside is curious. The façade is pointed with seven archivolts and above it there is a window with a pointed arch and Gothic tracery, which is the most ornate element of this austere temple. To the left of the façade there is a polygonal body in the shape of a tower that contains the spiral stairs that lead to the choir and the bell tower.
On the right side is the belfry bell tower, which is a later addition. In 1936, during the Civil War, this church was dismantled. In 2001 it was declared an Asset of Cultural Interest due to its great heritage value.