A tour of the 12th century Basilica of San Clemente showcases a striking golden mosaic, positioned above the central apse. Saint Clement’s evolution over the ages spans from a private domicile, utilized for covert Christian worship in the first century, to a commanding basilica. The secret of what was buried underneath the Basilica was unveiled in 1860, when flood water guided an Irish Dominican Roman Catholic priest and archaeologist to the layers beneath the basilica’s flooring.

Digging endeavors are presently in motion. In the present day, you’re able to descend to depths of up to 100 feet spread over three tiers. At the initial level, you’ll discover a 4th century Basilica, which was abandoned in the wake of the 12th century Basilica overhead. Further below, you’ll encounter the remnants of an old pagan Mithraic temple. The deepest level harbors the ruins of erstwhile Roman domiciles.

• Not recommended for guests with mobility issues as the tour itinerary requires climbing and descending steps and well as walking on uneven terrain.