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Explore Rome’s underground temples of St. Clement’s Basilica on a small-group tour for $70, including expert guides and access to ancient pagan and Christian ruins.
The Small-Group Tour at the Underground Temples of St. Clement’s Basilica offers an intimate look into some of Rome’s most hidden archaeological treasures. Priced at $70.02 per person, this approximately 2-hour experience is ideal for history enthusiasts who want to see beyond the usual tourist spots. The tour starts at the Piazza di San Clemente and is limited to 16 travelers, ensuring personalized attention and plenty of opportunities to ask questions.
What makes this tour particularly appealing is the chance to descend 14 meters below the current basilica to explore layers of history that span from pagan temples to early Christian churches. The experience includes entrance fees and headsets for clear narration, with the option to upgrade and visit Basilica di Santo Stefano Rotondo nearby. With a rating of 4.5, it’s a popular choice, recommended by 94% of participants.


The tour begins at Piazza di San Clemente, a central location easily accessible from public transportation in Rome. From here, the guide leads the group into the basilica itself, where the first highlight is the stunning golden mosaic in the apse. This mosaic not only dazzles with its craftsmanship but also offers insight into its spiritual importance.
Once inside, the group prepares to descend into the underground layers. The guided narration ensures that you understand the significance of each historical level, from the 12th-century basilica above to the early Christian ruins below. This setup allows visitors to appreciate how the site evolved through centuries of religious and cultural change.
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The above-ground basilica is a masterpiece in its own right. Known for its dazzling mosaics, this structure is a prime example of medieval architecture. As the guide points out the details, you’ll learn about the basilica’s history and its religious significance in Rome today.
The highlight is the golden mosaic in the apse, which draws attention with its vibrant colors and intricate design. After admiring the basilica’s interior, visitors prepare for the descent into the hidden layers that lie beneath.
The descent to the underground church takes visitors 14 meters below the basilica’s floor. This 4th-century underground site was built directly over St. Clement’s home, who was the third pope of Rome. Here, frescoes depicting martyrs tell powerful stories of early Christian faith and persecution.
This area reveals early Christian architectural styles, with well-preserved frescoes that show scenes from martyrdom. The atmosphere is cool and quiet, offering a stark contrast to the bustling city above. The guide’s commentary helps explain the symbolism and historical context of each artwork.

One of the most remarkable features of this underground tour is the well-preserved Mithraic temple. This ancient pagan temple provides a rare glimpse into Rome’s pre-Christian religious practices. Its excellent preservation allows visitors to see the layout and some original features, offering insight into mystery cults of the time.
The temple’s presence within the complex highlights the layering of Roman religious history, from pagan worship to Christian dominance. This aspect of the tour appeals especially to those interested in ancient religions and mystery cults.

For an additional 45-minute upgrade, visitors can choose to visit Basilica di Santo Stefano Rotondo al Celio. Known for its unique circular design, this basilica contains vivid frescoes depicting early Christian martyrs and their sacrifices.
The frescoes are graphic, portraying scenes of martyrdom that illustrate the devotion and struggles faced by early Christians. The guide shares stories behind the artwork, enriching the visit with historical context. Note that this optional visit is not available on Mondays when the church is closed.

The tour includes entrance fees to St. Clement’s Basilica, luggage deposit, and headsets for clear narration. The meeting point at Piazza di San Clemente is near public transportation, making it convenient to access.
Participants are advised to wear comfortable shoes due to the walking and stairs involved. The tour does not include hotel transport or food, and photography inside the basilicas is prohibited. A dress code requiring covered knees and shoulders applies to all sites.
The tour is most suitable for most travelers, but not recommended for those with claustrophobia due to the underground spaces. The small-group size ensures a personal experience, with a maximum of 16 travelers.

The guides are knowledgeable and passionate about the sites they show. Multiple reviews praise the guides’ storytelling, with one reviewer highlighting a guide named Tom for his entertaining and informative approach.
Guests appreciate guides who explain the layers of history clearly, especially at complex sites like this one with multiple levels of civilization. The small-group format allows for a more engaging and personalized narration.

At $70.02, the tour offers excellent value considering the access to multiple ancient sites and expert guidance. Included entrance fees eliminate extra costs, and the small-group setting enhances interaction.
The option to visit the Basilica di Santo Stefano Rotondo adds depth for those interested in Early Christian art and architecture. The moderate walking and stairs make it accessible for most visitors, but travelers with mobility issues or claustrophobia should consider their comfort level.
This small-group tour provides a thoughtful, detailed look into Rome’s underground history, making it perfect for those seeking more than the surface sights. The expert guides’ knowledge and storytelling elevate the experience, especially for fans of early Christian and pagan history.
While the cost and duration are manageable, the highlight remains the underground excavation—a rare chance to see Rome’s layered past in one visit. The optional upgrade to Basilica di Santo Stefano Rotondo offers further insight into early Christian art, although it is best suited for visitors comfortable with graphic frescoes and walking.
“Excellent tour. We booked a private tour because we anticipated having questions. Ernesto was very knowledgeable. We were most interested in the Mi…”
Is this tour suitable for children?
The tour includes graphic frescoes depicting martyrdom and involves walking many steps, so may not be suitable for young children or those sensitive to such imagery.
How long does the entire tour last?
The core tour lasts approximately 2 hours, with the optional Santo Stefano Rotondo visit adding about 45 minutes.
Are there any physical requirements?
Yes, visitors should wear comfortable shoes and be prepared for stairs and walking. The site is not recommended for those with claustrophobia.
What is included in the ticket price?
The price covers entrance fees, expert guides, headsets, and luggage deposit. It does not include food, drinks, or hotel transport.
Can I visit the underground ruins without a guide?
No, access is only available as part of this guided tour, ensuring interpretation and safety.
Is photography allowed inside the basilicas?
No, photography and filming are not permitted inside the basilicas to preserve the artwork.
How far in advance should I book?
Most bookings are made around 39 days in advance, but early reservations are recommended due to limited group size.
What is the cancellation policy?
You can cancel for free up to 24 hours before the scheduled start, with full refunds available if canceled in time.
Who operates this tour?
The experience is provided by TOURIKS, a trusted provider specializing in small-group historical tours in Rome.
Is this tour available all year round?
It is, but the optional Santo Stefano Rotondo visit is not available on Mondays when the church is closed. The tour’s operation is subject to weather and liturgical calendar events.