The church of San Pedro de la Rúa, located in the Navarrese town of Estella, is a majestic example of medieval religious architecture. Located in front of the Gustavo de Maeztu Museum, it is accessed through a staircase that leads directly to its imposing façade, a structure that was already known in the 13th century under the name of San Pedro el Mayor. Although its first mention as a parish church dates back to 1174, it is likely that its existence predates this date. In 1256, San Pedro de la Rúa was recognized as the largest church in the city, underscoring its importance in the region.

The present façade of the temple, built in the mid-13th century, shows a remarkable similarity to the façades of other nearby churches, such as San Román de Cirauqui and Santiago in Puente la Reina. The capitals and archivolts that adorn the entrance are richly decorated with vegetal, geometric and figurative motifs. On the jambs of the main door, there are figures of classical inspiration and of scatological type, including mermaids, centaurs, harpies and griffins, which give it a mythical and symbolic character.

The interior of the church preserves architectural elements dating from the last quarter of the 12th century, such as the chevet, while the main naves were built in the 13th century. A Gothic tracery window, located in the north wall and inside the tower, was added in the 15th century. The roofs of the naves, on the other hand, correspond to reforms carried out in the 16th and 17th centuries. Among the most outstanding works housed inside is the altarpiece of the Virgin of the Rosary, a piece from the first half of the seventeenth century that in its central niche holds an image of the Virgin of the O, dating from the fourteenth century.

The chapel of San Andrés, dedicated to the patron saint of the city, was built in baroque style from 1706. Its altarpiece, from the end of the 18th century, is a sample of the rococo style. Another outstanding element is the altarpiece of the Crucified, from the 17th century, which contains a Romanesque carving of Christ on the cross, datable to the 13th century. In the presbytery, there is an image of the Virgin of Bethlehem, a Gothic carving from the end of the 13th century, which originally belonged to the church of the Holy Sepulcher, located nearby. Other altarpieces of interest are those dedicated to St. Nicholas and the Holy Trinity, both made in the 17th century.

In the undercroft, under the window of the tower, there is an exquisite baroque choir stall next to a baptismal font, which is the only original liturgical object of the original building, dating from the 12th century. In addition, the walls of the choir loft are adorned with 17th century canvases of varying technical quality.

The cloister of San Pedro de la Rúa, with a square floor plan, although only the western and northern galleries remain, dates from approximately 1170. Unfortunately, a significant part of the cloister was accidentally destroyed in 1572, when Castilian troops, during the Conquest of Navarre, demolished the nearby castle of Zalatambor, causing collateral damage to the church. Despite this loss, the capitals that have survived are of exceptional sculptural quality, with works that show the influence of the Camino de Santiago in the spread of new artistic forms. These capitals present historiated scenes from the lives of saints, such as St. Andrew, and episodes from the life of Christ, including the Annunciation, the Incarnation, the Passion and the Resurrection, as well as symbolic figures of animals and plant motifs that enhance the iconographic richness of the ensemble.