Construction of the church of San Pedro in Romanos began in the 16th century and was completed in 1609. To build the church, part of the castle compound built in the 14th century in this town was demolished. A section of the wall and two circular towers are the only parts of the castle still standing. The remaining area of the castle was used as a cemetery. This is a Renaissance-Gothic church with influences from the eastern coast of the peninsula.

The interior contains a single nave covered by late Gothic stellar vaults and a polygonal apse at the east end. A stone arch frames the entrance to the church.

The church boasts a magnificent defensive tower that is somewhat older, dating from around 1400. At the bottom of the tower there is an entrance via a pointed arch. This entrance also provided access to the original church. The uppermost section of the tower was adapted to house the belfry.

This tower is decorated with motifs that are common in Aragonese Mudejar art: bricks in zig-zag patterns, intertwining arches and angled brick patterns.