Basilica of Sant’Agnese Outside the Walls and the Martyr’s Tomb

Why pilgrims come

Visit the resting place and legacy of St. Agnes of Rome

Sant’Agnese fuori le Mura is the principal burial shrine of St. Agnes, the young Roman virgin martyr whose cult is attested among the ancient witnesses of the Church in Rome. The details of her Passion vary in later sources, but devotion at her grave is early and historically secure. The official catacomb record states that she was buried in a family hypogeum along the Via Nomentana and that Roman and foreign pilgrims soon came to the tomb.

Constantina, daughter of Constantine, sponsored a great fourth-century cemetery basilica nearby and chose burial near Agnes. Pope Honorius I built the present semi-subterranean basilica directly over the martyr’s tomb between 625 and 638, replacing an earlier shrine. A broad stair descends from modern street level into a church whose reused columns and luminous apse mosaic place the pilgrim within the layered life of early Christian Rome.

Beneath the high altar, the shrine preserves Agnes’s bodily remains apart from the head later entrusted to Sant’Agnese in Agone. The adjacent catacombs keep the geography of her original burial, while the nearby Mausoleum of Santa Costanza preserves the imperial family’s devotion and extraordinary late-antique mosaics. Church, catacomb, and mausoleum have different access arrangements.

January 21 joins the martyr’s tomb to the wider Roman Church. Lambs are blessed in connection with Agnes’s feast; their wool is used for the pallia given to new metropolitan archbishops. The tradition links Agnes—the name resonates with the Latin word for lamb—to episcopal communion and the pastoral responsibility symbolized by the pallium.

This is the first Agnes stop. Pray at the tomb and visit the catacomb before continuing to Piazza Navona, where Sant’Agnese in Agone preserves the received memory of her martyrdom and the relic of her head. Keeping burial and martyrdom sites distinct turns two beautiful churches into one coherent pilgrimage.

Descend to the basilica built over Agnes’s tomb, then enter the catacomb as the documented landscape of her ancient cult. Continue later to Sant’Agnese in Agone for the martyrdom tradition and head relic.