The Iglesia de Santa Maria de Eunate is one of the most remarkable buildings on the Camino Frances, standing alone in a field about 1.5 km south of Murozabal. It's an octagonal 12th-century Romanesque church surrounded by a freestanding arcade of arches — a design so unusual that scholars have been arguing about its origins for centuries.
The name Eunate likely derives from the Basque for "hundred gates," a reference to the arcade's many openings. That arcade — roughly octagonal itself, with carved capitals and semicircular arches — surrounds the church at a slight distance, creating a covered walkway. It's unlike anything else in Navarra.
The Templar theory is popular but unproven. No documentary evidence links the church to the Knights Templar, though the octagonal form inevitably invites the comparison. The more likely builders were the Hospitallers, whose presence in this area is well documented. The church may have served as a funerary chapel for pilgrims who died on the road — pilgrim burials have been excavated in the surrounding field, and the octagonal plan echoes the Church of the Holy Sepulchre in Jerusalem, a common model for funerary architecture.
Inside, the church is bare and austere. The eight-ribbed vault rises to about 12 meters, with star-shaped openings in the ceiling that admit thin shafts of light. The alabaster windows keep the interior deliberately dark — appropriate for a church whose function may have been the performance of funerary rites. The Cordoban influence in the vault ribbing is unmistakable.
The church operates as a small museum with seasonal hours (generally 10:30-14:00 and 15:00-19:00 from late March through mid-October, with extended afternoon hours in July and August). A path connects Eunate directly to Obanos, so you can visit without backtracking to Murozabal.
The church dates to around 1170. Its octagonal plan and detached cloister arcade are unique in Navarra and rare in all of Europe. The 26 decorated capitals of the interior columns show a mix of geometric, vegetal, and figural motifs. The eight-ribbed vault, with each rib meeting at a different angle because the octagon is slightly irregular, shows sophisticated engineering and a clear debt to Islamic architecture from Cordoba.
The pilgrim burials found around the church support the funerary chapel theory, as does its position near the junction of the Frances and Aragones routes — a natural place for a pilgrim cemetery. The name Eunate is generally understood as Basque for "hundred gates," referring to the arcade's arches. The Hospitallers of St. John are the most likely patrons, though definitive proof remains elusive.