The Church of San Martín de Pau was built in Romanesque times. In the first phase, in the 11th century, the semicircular apse and part of the single nave were built, made of small pebbles.
The rest of the nave and the façade correspond to a second phase, already between the end of the 12th century and the beginning of the 13th century, and were built with well-crafted granite ashlars. The façade has five semicircular arches in gradation that end in two columns on both sides of the door. Above the columns, capitals that combine plant decorations with shapes of animals and monsters.
Some members of the Pau family chose to be buried inside the church, as some funerary tombstones from the 14th century that we found inside remind us. Over the centuries, the church has been reforming; The sacristy and a chapel dedicated to the Virgin of the Rosary were added, among other modifications. The furniture, the altarpiece and other ancient liturgical objects were lost during the first days of the Civil War, in 1936.