In the parish of Ferreira is one of the gems of the heritage of the Terras de Sousa, the Ferreira Monastery. With a strong influence, in the Middle Ages, on the settlement and agricultural and cultural development of the region, the Romanesque Church of S. Pedro de Ferreira that has reached our days is an impressive testimony of 12th century architecture. In it you can find influences as diverse as those of the school of Zamora, evident in the portico; from the school of Coimbra, visible in the capitals and, still, from a local school, with parallels to Unhão, in the beautiful stonework of the two side doors.

The Church is of impressive strength and robustness, of a single nave, with buttresses attached outside and inside. It has an exterior nartex with a bell tower that, although from a later period, articulates harmoniously with the construction of the century. XII. The entrance porch is made up of five arches with simple columns and profusely worked capitals.

Main Chapel: This is the sacred space of the church (Sanctuarium). Burial in this space, or as close as possible, was a guarantee of salvation. Hence they use the exterior spaces as a cemetery, in this case the Atrio next to the axial portal. The chancel is divided into two spaces practically the same width, one covered with a spherical vault of 5 panels, and the other of a rectangular plan with a vault of a cradle. The walls are organized in two registers, the upper one with blind arches with rounded archivolts in the intervals between cracks, the lower one with edicules or niches with half orange dome, creating depth and a luminous game that animates the space and the nobilita, taking straight into account the liturgical and ritualistic value of ousia.