Ticket and Tour Underground San Clemente & Roman House

Descend through two thousand years of Roman history beneath the streets of the Eternal City

This underground Rome tour at San Clemente takes visitors through one of the most layered archaeological sites in the world, dropping 16 meters below street level to reveal a pagan Mithraeum, early Christian frescoes, and the foundations of a first-century Roman house. Few experiences in Rome offer this kind of direct, vertical encounter with history. An expert guide accompanies the group at every level, providing context that goes well beyond what standard audio guides can offer.

The Basilica of San Clemente stands as a living record of Rome's religious and architectural evolution. Its three distinct levels — the current medieval basilica, the 4th-century paleo-Christian church beneath it, and the 1st-century Roman structures below that — illustrate how each generation of Romans built directly on top of what came before. The site is maintained by Irish Dominican friars, who have preserved its character while allowing scholarly and public access.

The optional extension into the Roman houses on the Celio hill adds another dimension to the visit. These structures preserve original frescoes that document the cultural shift from paganism to early Christianity in remarkable condition. Together, the two sites form a coherent narrative of Rome's transformation across nearly a millennium.

On-site assistance staff greet visitors at the meeting point and ensure the transition to the guide is smooth. The tour is classified as easy in terms of physical difficulty, though visitors should be comfortable with stairs and uneven underground surfaces.