The cathedral contains a rare collection of 11th-century mozarabic-style capitals.
It is recognized as one of the earliest examples of the Romanesque style in the Iberian Peninsula.
The checkerboard pattern on the exterior is known specifically as the 'Jaca style' or 'jaqués' molding.
The Diocesan Museum located within the complex holds the 'Siresa' frescoes, considered among the most important Romanesque paintings in Spain.
The central dome is a late-gothic addition that replaced an earlier Romanesque structure.
The cathedral was commissioned by King Sancho Ramírez in 1077 to mark the foundation of Jaca as a city.
Saint Peter's Cathedral in Jaca is one of the oldest Romanesque cathedrals in Spain, dating back to the late 11th century. It served as a vital landmark for pilgrims traveling the Camino de Santiago along the Aragonese route. The structure features a distinctive triple-apse design and a central dome known as a cimborrio. Its interior houses the famous 16th-century wooden altarpiece of the Virgin. The cathedral is architecturally significant for its 'jaqués' checkerboard pattern found on the corbels and moldings. Adjacent to the cathedral, the Diocesan Museum of Jaca displays an extensive collection of medieval Romanesque frescoes salvaged from local abandoned churches. The building is constructed primarily of ashlar stone, reflecting the fortified religious architecture of the High Middle Ages. The site remains an active seat of the Diocese of Jaca.
The main portal entrance at street level offers the best perspective of the original Romanesque stonework.
Combine your visit to the cathedral with the adjacent Diocesan Museum to see the complete Romanesque art collection.
Look up at the exterior cornices to identify the signature 'jaqués' checkerboard stone carvings.
Check the cathedral website before visiting to ensure the interior is not reserved for private religious services.
Do not overlook the Diocesan Museum, which contains the most significant interior art pieces, as visitors often focus only on the main altar.
The cathedral and museum may close temporarily for local liturgical events or religious holidays.
Maintain silence, remove hats, and ensure shoulders and knees are covered when entering the sanctuary.
