Crypt of San Antolín, Cathedral of Palencia

The Crypt of San Antolín lies beneath Palencia Cathedral and features horseshoe arches, ancient columns, and stone capitals arranged through multiple underground chambers. The structure displays the building techniques of its early period and was designed as a sacred space.

This underground chamber dates to the 7th century and was built to house relics of Saint Antoninus, brought to Palencia from Narbonne during that era. It emerged during a period when the region experienced significant transitions in power and rule.

The crypt honors Saint Antoninus, a figure whose veneration runs deep in the region's religious life. The space reflects the spiritual importance this saint has held for local communities across the centuries.

Access to the crypt goes through the cathedral's cloister as part of visiting the main building. The underground space can be cool and dimly lit, so comfortable shoes and a light jacket are recommended.

The crypt contains a natural water source that has flowed continuously since its founding, making it a distinctive feature of the site. This underground spring held great significance for earlier pilgrims.