Underground Rome Itinerary: San Clemente & Sts. John and Paul

Step into the hidden layers of Rome’s history with this immersive itinerary that uncovers two of the Eternal City’s most fascinating underground sites. Visitors will journey beneath the bustling streets to explore ancient temples, Roman houses, and early Christian sanctuaries that reveal over two millennia of transformation.

1. Basilica of San Clemente

This site offers a rare chance to walk through Rome’s layered past in a single visit, tracing the city’s evolution from pagan rituals to Christian devotion.

• Three Levels of History: Descend from the 12th-century basilica into a 4th-century church, and finally into the remains of a 1st-century Roman domus and Mithraic temple.
• Glittering Mosaics: Admire the medieval artistry in the upper basilica.
• The Mithraeum: Experience the atmospheric underground vault where followers of the god Mithras once gathered.

2. Basilica of Saints John and Paul (Case Romane del Celio)

Beneath this basilica lies a labyrinth of frescoed chambers that reveal the daily lives of Rome’s elite, later sanctified as the site of martyrdom for Saints John and Paul.

• Hidden Roman Houses: Explore the Case Romane del Celio, a complex of more than 20 rooms dating from the 2nd to 4th centuries.
• Lavish Frescoes: Discover walls depicting both mythological and Christian scenes.
• Domestic Life: See evidence of ancient Roman dining rooms, private baths, and the architectural evolution of aristocratic residences.

Traveler’s Info: Underground Rome

• Duration: Approximately 3–4 hours to explore both sites.
• Dress Code: Shoulders and knees must be covered for entry to the basilicas.
• Climate: Bring a light jacket; temperatures are significantly cooler underground.
• Footwear: Wear comfortable shoes for uneven floors and narrow stairs.

Accessibility Notice

While the upper basilicas are accessible, the underground levels are challenging:

• San Clemente: Underground levels involve steep stairs and narrow passages.
• Case Romane: Involves stairs and uneven historical floors.
• Note: Underground areas are generally not suitable for wheelchairs or visitors with significantly reduced mobility.