The church of Sant Serni d'Àrreu is the old Romanesque temple of the village of Àrreu, in the municipality of Alt Aneu, in the Pallars Sobirà region.
It is located at the northeast end of the village.
It is a single-nave church without an apse. It has a bell tower with two belfries on the west façade and a door at noon. Inside, three notable Romanesque pillars are preserved, a baptismal font, a holy water font and a third one that remains embedded in the wall.
The latter may have originally been a sarcophagus, but more recently it was used to store holy oils.
The church of Sant Serni d'Àrreu is the old Romanesque temple of the village of Àrreu, in the municipality of Alt Aneu, in the Pallars Sobirà region.
It is located at the northeast end of the village.
It is a single-nave church without an apse. It has a bell tower with two belfries on the west façade and a door at noon. Inside, three notable Romanesque pillars are preserved, a baptismal font, a holy water font and a third one that remains embedded in the wall.
The latter may have originally been a sarcophagus, but more recently it was used to store holy oils.