The Church of San Martino, facing east, dates back to the Ottonian era, about 10 centuries ago, and for this reason has a Romanesque style. Initially it was used as a baptistery and until the last century also as a cemetery chapel of the nearby cemetery.
The roof is pitched with wooden tiles. The façade is a hut, surrounded by pillars just emerging from the wall surface and has a small painted triangular pediment (protected by a three-sided roof canopy) and an architraved portal on which the coat of arms of the Scopoli family is engraved.
On the sides there are various buttresses and on the south wall there are two nineteenth-century paintings. The one on the right depicts the baptism of Jesus (by Leonardo Capochiesa da Tonadico) while the one on the left depicting the Madonna and Saint John is the background to a large wooden Crucifix. Between the two works is the date 1559 and the coat of arms of the Welsperg family.
The interior of the church has a single nave illuminated by two windows open on the southern side, ending with a semicircular apse preceded by a round arch, adorned with painted hanging arches and divided by semi-columns with cubic capitals.
On the walls there are fragments of valuable frescoes, a wooden coffered ceiling (built in 1674 by Giorgio Moena), a stone baptismal tub and a reliquary embedded in the altar.
Entering, on the left you can see the Last Judgment and a representation of San Martino, which gives the name to the church. On the upper right, however, is the Archangel Michael intent on crushing Satan.
In the apse you can see Christ the Saviour surrounded by the symbols of the Evangelists and some apostles.
In the 1990s, the Municipality of Fiera di Primiero restored this building from a static point of view. In 1999, archaeological excavations were carried out that highlighted the stratigraphy of the floors, the sixteenth-century tombs and metal and ceramic artefacts. Subsequently, by rearranging the original altar, a niche with a parchment and bones was found.