San Clemente lets visitors descend through three distinct levels of Rome: a twelfth-century basilica, a fourth-century church, and earlier Roman structures that include a Mithraic temple. The stacked buildings reveal how later communities reused and buried the city beneath them.
Quick facts
- The upper basilica dates to the twelfth century.
- A fourth-century basilica lies below it, above a first-century Roman complex.
- Joseph Mullooly began excavations beneath the church in 1857.
More places in Rome
Arch of Constantine
The Arch of Constantine stands beside the Colosseum on the route of Roman triumphal processions. Its reliefs combine newly carved Constantinian scenes with reused panels from earlier emperors, turning the monument into a carefully assembled claim to imperial continuity.
Arch of the Argentarii
Despite its name, the Arch of the Argentarii is a decorated passage beside San Giorgio al Velabro. Dedicated in 204 CE by money changers and cattle merchants, its marble reliefs record imperial power and the later erasure of disfavored figures.
Aventine Keyhole
The Aventine Keyhole frames the dome of St Peter’s through the gate of the Order of Malta’s Magistral Villa. The view joins Rome, Vatican City, and the Order’s institutional territory in one carefully aligned sightline.
Basilica of Saint Paul Outside the Walls
Saint Paul Outside the Walls stands over the traditional burial place of the apostle beyond ancient Rome’s walls. The present basilica, rebuilt after a devastating nineteenth-century fire, follows the scale of its ancient predecessor and preserves a long tradition of pilgrimage.
Basilica of San Giovanni in Laterano
San Giovanni in Laterano is Rome’s cathedral, with a baptismal font at the heart of its history. Its vast interior has been repeatedly rebuilt, yet the basilica’s role as the bishop of Rome’s church reaches back to the early Christian period.
Basilica of Santa Maria in Trastevere
The mosaics of Santa Maria in Trastevere glow above a church founded in the early centuries of Christianity. Its medieval rebuilding and later decoration reveal a sacred place continually renewed by the neighborhood that gathers in the piazza outside.