San Antolín de Bedón, 13th-century Romanesque church in Llanes, Spain.

San Antolín de Bedón is a 13th-century Cistercian-style church with three naves of different heights, separated by pointed arches on stone columns, ending in three semicircular apses. It has almost no ornamentation, and an inscription records that Abbot Juan began the work in 1205.

Built in 1205 under Abbot Juan's leadership, the church began as a Benedictine monastery church in this region. Asturian nobles donated lands and property to it, and King Charles I stopped here in 1517 during his journey to Castile.

The monastery was dedicated to Saint Antolin of Apamea, a 4th-century Syrian martyr whose relics lay at the Frédelas abbey near Toulouse; his cult reached medieval Spain through Bishop Ponce, adviser to Sancho Garcés III of Pamplona. The church, built with Cistercian features, has almost no ornamentation, so visitors look instead at the plain stone walls and the three apses.

The church sits where the River Bedón meets the coast near a sandy beach, accessible mainly through guided visits and organized group tours. Planning ahead to confirm opening hours and arranging access with local staff is recommended.

This church is the sole surviving building from what was once a larger Benedictine monastery with multiple structures. The roof design blends wooden framing in the naves with ribbed vaulting in the transept, showing different construction techniques used across the building.