
Rome: San Clemente Underground and Basilica Small Group Tour
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September 2026
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Adults
Age 13 and over
Children
Age 12 and under
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Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.9/5
Based on 181 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is Rome: San Clemente Underground and Basilica Small Group Tour worth booking?
Rome: San Clemente Underground and Basilica Small Group Tour is a 1.5-hour experience in Rome, Italy, from $49 per person. It scores 80 out of 100 on the Outty Ranking, which we label “Exceptional”, based on a 4.9/5 rating across 181 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 80 / 100
- Rating
- 4.9/5 (181)
- Duration
- 1.5 hours
- From
- $49 per person
A visit of the 12th century Basilica of San Clemente reveals a gleaming gold mosaic above the central apse. St. Clement's transformed over centuries from a private home that was the site of a secret Christian worship in
What you get
- Expert & Passionate English Speaking Guide
- Access to San Clemente Undergrounds
- Professional Headsets to hear your guide clearly (when at least 5 guests)
- Small group tour (max 15 guests)
- Entrance Tickets to the Archeological Site of San Clemente (10 euro value)
About this experience
A visit of the 12th century Basilica of San Clemente reveals a gleaming gold mosaic above the central apse. St. Clement's transformed over centuries from a private home that was the site of a secret Christian worship in the first century to an imposing basilica. What laid beneath the Basilica was unknown until 1860, when flooding led an Irish Dominican Roman Catholic priest and archaeologist into the levels beneath the basilica floor. Excavations are ongoing. Today, you can descend up to 100 feet underground over three levels. At the first level we will find a 4th century Basilica, long forgotten after the construction of the 12th century Basilica above. Underneath, find the remains of an ancient pagan Mitraic temple. Lower still, ruins of ancient Roman homes.
What's included
Included
- Expert & Passionate English Speaking Guide
- Access to San Clemente Undergrounds
- Professional Headsets to hear your guide clearly (when at least 5 guests)
- Small group tour (max 15 guests)
- Entrance Tickets to the Archeological Site of San Clemente (10 euro value)
Not included
- Gratuities
- Hotel Pick-up and Drop-off
What you'll see and do
Basilica of San Clemente
Visit of the Basilica of San Clemente in Laterano and the archeological site.
90 minutes here · Admission included
Mitreo di San Clemente
Part of the visit of the archeological site under the Basilica of S. Clemente.
10 minutes here · Admission included
Where it starts and ends
Meeting point
Rome
Meeting point is near St Clemente Basilica on the corner at Via di S. Giovanni in Laterano, 126. Please note the meeting point is an outdoor location and not an office. You guide will be waiting for you holding a sign with the EcoArt logo. The nearest metro stop is Line B ‘Colosseo’.
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
Tour ends at St. Clement's Basilica at 4:30PM
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 15 travelers per booking
- Operated by
- EcoArt Travel
Know before you go
- Public transportation options are available nearby
- Suitable for all physical fitness levels
- Not recommended for guests with mobility issues as the tour itinerary requires climbing and descending steps and well as walking on uneven terrain.
- Check-in is 15 minutes prior to the booked start time. Tickets are time sensitive and we cannot accomodate late arrivals.
- A dress code is required to enter places of worship and selected museums. No shorts or sleeveless tops allowed. Knees and shoulders MUST be covered for both men and women. You may risk refused entry if you fail to comply with these dress requirements.
Photos






What travelers are saying
Outty’s summary of the themes that recur across 181 traveler reviews. Written by us, not quoted from reviewers.
Knowledge and storytelling
8 mentionsReviewers describe the commentary as informative rather than scripted.
The guide
7 mentionsTravelers single out the guide as the reason the experience works.
Small groups
2 mentionsThe group size is repeatedly described as intimate rather than packed.
Traveler reviews
181 verified traveler reviews for Rome: San Clemente Underground and Basilica Small Group Tour. Ratings and reviews provided by Viator and Tripadvisor.
Very good guide who tells a lot
Very good guide who tells a lot
Response from the operator: Thank you for your review! We’re happy to hear that you enjoyed the tour and appreciated the guide’s detailed explanations and knowledge. Thank you for choosing EcoArt!
via Tripadvisor
Great tour, very educational
What a great tour! Gianluca was a wonderful guide who mixed a deep level of knowledge with a good sense of humor. He really brought the history alive and helped us understand the wonder of the “lasagna church.” Highly recommend!!
Response from the operator: Dear Guest, Thank you very much for your fantastic review and recommendation. We are delighted to hear that you had such a great experience with Gianluca. His ability to combine his deep knowledge with humor and engaging storytelling is exactly what makes a tour memorable, and we are happy to know that he helped bring the history and beauty of the site to life for you. We will be sure to share your kind words with Gianluca, as your appreciation will mean a lot to him. Thank you again for choosing EcoArt and for taking the time to share your experience. We hope to welcome you again soon for another unforgettable tour. Warmest regards, EcoArt Team
via Tripadvisor
Essential tour
Excellent tour with Ricardo - the Basilica is an essential part of any historical tour of Rome and , with our small group, Ricardo gave a thorough and interesting tour- thank you Ricardo!
Response from the operator: Thank you so much for your wonderful review! We are delighted to hear that you had such a great experience with Riccardo. It's wonderful to know that you enjoyed the small-group tour and found his explanations of St. Peter's Basilica thorough, engaging, and informative. We'll be sure to share your kind words with Riccardo—he will be delighted to hear them! Thank you for choosing EcoArt. We hope to welcome you back for another unforgettable experience in Rome!
via Tripadvisor
Hidden gem of San Clemente
Fantastic tour with an amazing knowledgeable guide.
Response from the operator: Thank you so much for your kind review! We're delighted to hear that you had a fantastic tour and enjoyed the knowledge and expertise of your guide. Thank you for choosing EcoArt. We hope to welcome you back for another unforgettable experience in Rome! Warm regards, EcoArt Team
via Tripadvisor
I highly recommend this...
I highly recommend this tour and in particular our tour guide Luca. He was very knowledgeable about the church and the ruins on which the church was built.
Response from the operator: Thank you so much for your wonderful review, dear Ann! We're delighted to hear that you enjoyed your tour and that Luca's knowledge helped bring the history of the Basilica of San Clemente and its fascinating underground ruins to life. We'll be sure to share your kind words with Luca—he'll be thrilled to hear them! Thank you for your recommendation and for choosing EcoArt. We hope to welcome you back for another unforgettable experience in Rome!
via Viator
Good to know
- Duration
- 1.5 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Price range
- $49 to $59
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 63
- Verdict
- Exceptional
Why this scores 80
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
Rome: San Clemente Underground and Basilica Small Group Tour: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Rome.
How much does Rome: San Clemente Underground and Basilica Small Group Tour cost?
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Prices start at $49 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Rome usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does Rome: San Clemente Underground and Basilica Small Group Tour take?
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Plan for about 1.5 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Rome is not rushed.
Is Rome: San Clemente Underground and Basilica Small Group Tour worth it?
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It holds an Outty Ranking of 80 out of 100, which we label "Exceptional". That score blends traveler sentiment (4.9/5 across 181 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable most popular in Rome, and how flexible the cancellation terms are.
Can I cancel or reschedule Rome: San Clemente Underground and Basilica Small Group Tour?
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Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.
Is Rome: San Clemente Underground and Basilica Small Group Tour suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 1.5-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book Rome: San Clemente Underground and Basilica Small Group Tour?
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Around 63 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Rome can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.
What should I bring or wear?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Rome and add a light layer if any part of the 1.5-hour experience runs outdoors or after sunset.
Where does Rome: San Clemente Underground and Basilica Small Group Tour start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Rome within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.
What are the best things to do in Rome?
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Rome runs on skip-the-line access. The Colosseum underground, the Vatican before opening, and the catacombs south of the walls all require a licensed operator, and the price gap between the good ones and the rest is smaller than you would expect. We rank by guide credentials, group size and how reliably the promised access actually materialises. On Outty we rank every Rome experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Rome Pasta and Tiramisu Class: Ravioli, Fettuccine & Fine Wine 5*, Pasta Making & Wine Tasting with Dinner in Frascati from Rome, Rome: Pizza & Tiramisu or Gelato Class with Flowing Fine Wine 5*. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.
When is the best time to visit Rome?
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April, May, September and October. August is hot and half the city is shut. Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.
How many days do you need in Rome?
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Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.
Do I book through Outty or through the operator?
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Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.
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