The Underground Rome Experience: San Clemente in Rome
Rome, Italy

The Underground Rome Experience: San Clemente

Outty Ranking 61 5.0 · 22 traveler reviews1.3 hoursFrom $199

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September 2026

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From, per person$199
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Outty Ranking

61/100

Solid Choice. Our proprietary evaluation. How we score

Traveler rating

5.0/5

Based on 22 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.

Quick answer

Is The Underground Rome Experience: San Clemente worth booking?

The Underground Rome Experience: San Clemente is a 1.3-hour experience in Rome, Italy, from $199 per person. It scores 61 out of 100 on the Outty Ranking, which we label “Solid Choice, based on a 5/5 rating across 22 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.

Outty Ranking
61 / 100
Rating
5/5 (22)
Duration
1.3 hours
From
$199 per person

Uncover one of Rome’s best kept secret with a guided tour of the Basilica di San Clemente, a site that takes you on a journey through more than two thousand years of history. Your experience begins outside the Basilica

What you get

    About this experience

    Uncover one of Rome’s best kept secret with a guided tour of the Basilica di San Clemente, a site that takes you on a journey through more than two thousand years of history. Your experience begins outside the Basilica di San Clemente, located just steps away from the Colosseum. On the ground level, you’ll explore the 12th-century basilica, famous for its richly decorated mosaics, marble floors, and frescoes. Admire the shimmering apse mosaic of the Tree of Life Next, descend beneath the floor into the 4th-century church, where early Christian worshippers once gathered. The walls are still lined with faded frescoes depicting biblical scenes, saints, and symbols of the first centuries of Christianity in Rome. Finally, continue deeper underground into the 1st-century Roman buildings, including a house and a temple dedicated to the mysterious god Mithras. Step inside the Mithraeum to see the altar where followers of the cult once performed their secret rituals.

    What's included

    Included

    • Tickets, Radios and Headsets

    Not included

    • Gratuities

    What you'll see and do

    1. Basilica of San Clemente

      Uncover one of Rome’s most fascinating hidden treasures with a guided tour of the Basilica di San Clemente, a site that takes you on a journey through more than two thousand years of history. In just 75 minutes, you’ll walk through three incredible layers stacked one on top of the other, each revealing a different chapter of the Eternal City’s past. Your experience begins outside the Basilica di San Clemente, located just steps away from the Colosseum. Here you will meet your licensed guide, who will introduce the story of this unique monument before leading you inside. On the ground level, you’ll explore the 12th-century basilica, famous for its richly decorated mosaics, marble floors, and frescoes. Admire the shimmering apse mosaic of the Tree of Life and discover how the medieval church was built directly on top of an earlier structure.

      75 minutes here · Admission included

    Where it starts and ends

    Meeting point

    Rome

    Meet us at Piazza di S. Clemente, in front of Basilica San Clemente. You will find City Walkers staff in bright blue t-shirts and sign.

    Hotel pickup

    No pickup: everyone meets at the start point.

    Ends at

    Meet us at Piazza di S. Clemente, in front of Basilica San Clemente. You will find City Walkers staff in bright blue t-shirts and sign.

    Before you book

    Cancellation
    For a full refund, cancel at least 24 hours before the scheduled departure time.
    Languages
    en, it, fr
    Ticket
    Mobile Only
    Runs on
    Every day
    Group size
    Up to 10 travelers per booking
    Operated by
    City Walkers Tours

    Know before you go

    • Wheelchair accessible
    • Infants and small children can ride in a pram or stroller
    • Public transportation options are available nearby
    • Not recommended for travelers with poor cardiovascular health
    • Suitable for all physical fitness levels

    Photos

    The Underground Rome Experience: San Clemente in Rome, photo 2The Underground Rome Experience: San Clemente in Rome, photo 3The Underground Rome Experience: San Clemente in Rome, photo 4The Underground Rome Experience: San Clemente in Rome, photo 5The Underground Rome Experience: San Clemente in Rome, photo 6

    What travelers are saying

    Outty’s summary of the themes that recur across 22 traveler reviews. Written by us, not quoted from reviewers.

    Knowledge and storytelling

    10 mentions

    Reviewers describe the commentary as informative rather than scripted.

    The guide

    6 mentions

    Travelers single out the guide as the reason the experience works.

    Traveler reviews

    22 verified traveler reviews for The Underground Rome Experience: San Clemente. Ratings and reviews provided by Viator and Tripadvisor.

    5 star
    22
    4 star
    0
    3 star
    0
    2 star
    0
    1 star
    0
    Sort
    O4495HPmarthab · August 2026

    Fantastic tour! Don’t miss it!

    Think back to the best teachers you ever had — the lively storytellers who know their subject thoroughly and whose passion for it is infectious. That’s what you get with David, plus his wonderfully irreverent wit. My wife and I loved his tour of the Colosseum so much that we eagerly signed on for his mind-blowing tour that afternoon of Basilica of San Clemente. We only wish we could have spent more time in Rome so we could have hired David to guide us through more of that city’s wonders. Thank you, David! Highly recommended.

    via Tripadvisor

    gday13 · June 2026

    A Hidden Gem Made Even Better by an Amazing Guide

    This tour of San Clemente was one of the highlights of my trip to Rome. The basilica itself is incredible, and walking through the different layers of history beneath the church was unlike anything I've experienced before. It's fascinating to see how centuries of Roman history exist literally beneath your feet. What truly made the experience special, however, was our guide, David. He was exceptionally knowledgeable, but what set him apart was his sense of humor. From the beginning of the tour, he kept the group engaged with constant banter, jokes, and friendly conversation. He had a wonderful ability to make history feel accessible and entertaining rather than overwhelming. As someone who enjoys a little humor mixed in with learning, I really appreciated his style. He welcomed questions, encouraged interaction, and created a relaxed atmosphere where everyone felt comfortable participating. I found myself laughing as much as I was learning. By the end of the tour, I had a much deeper appreciation for the history of Rome and one of its most fascinating sites. If you're considering a visit to San Clemente, I highly recommend this tour—and if you're lucky enough to have David as your guide, you're in for a treat. Thank you, David, for making an already amazing place even more memorable! 🇮🇹✨

    via Tripadvisor

    Julian W · June 2026

    A an extraordinary place! A unique guide!

    My wife and I were fortunate enough to have David as our guide for a trip to The Colosseum - and incredibly informative and highly entertaining experience! At the end of the Colosseum tour, David mentioned that he'd be guiding a tour around the Basilica di San Clementi that afternoon and, having had such a educative - but fun! - tour of The Colosseum, we readily signed-up. David knows his home city of Rome extremely well and has a very natural - and entertaining! - way of getting others to understand the wondrous history of this place that I doubt few other tour guides are able to. The Basilica di San Clementi is a truly extraordinary place, but one needs someone like David to really bring home its quite staggering story. An amazing tour, and well worth one's time. We would readily do this tour again the next time we're in Rome. Thank you for an amazing day!

    via Tripadvisor

    P5197VXjackiep · June 2026

    Perfect intimate tour on our honeymoon!

    After our amazing Colosseum and Roman Forum tour with David, he mentioned that he would be leading a private tour of the Basilica of San Clemente later that day. Since we were on our honeymoon and looking for a more personal experience, it was the perfect suggestion. David’s knowledge of the Basilica of San Clemente was truly remarkable. As we descended through the different layers of the church and into the ancient structures below, it felt as though he was taking us back in time to when each level was originally built. His ability to explain the history, culture, and significance of what we were seeing made the experience come alive in a way that no guidebook ever could. The private setting allowed us to ask questions and fully immerse ourselves in the experience. David’s passion for history, combined with his great sense of humor, kept us engaged throughout the entire tour. We left not only with a greater understanding of San Clemente’s incredible history but also with memories that will stay with us long after our honeymoon. If you’re visiting Rome and want an experience that goes beyond the typical tourist attractions, we cannot recommend this tour enough. Thank you, David, for sharing your knowledge and helping make our honeymoon even more special.

    via Tripadvisor

    Monika A · June 2026

    David was an excellent tour guy.

    David was an excellent guide and the tour was very interesting. Would recommend this to anybody interested in history.

    via Tripadvisor

    Good to know

    Duration
    1.3 hours
    Free cancellation
    Up to 24h before
    Minimum age to book
    All ages
    Availability
    Bookable today
    Runs on
    Every day
    Hotel pickup
    No pickup, meet at start point
    Booked in 30 days
    8
    Verdict
    Solid Choice

    Why this scores 61

    The Outty Ranking is a weighted composite. Here is how this experience performed on each component.

    Traveler sentiment (30% weight)88
    Review evidence (18% weight)43
    Booking momentum (14% weight)35
    Value for money (12% weight)0
    Listing quality (10% weight)85
    Local standing (8% weight)74
    Booking flexibility (8% weight)100

    The Underground Rome Experience: San Clemente: questions travelers ask

    Practical detail on this experience, plus the wider planning questions for Rome.

    How much does The Underground Rome Experience: San Clemente cost?

    +

    Prices start at $199 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 The Underground Rome Experience: San Clemente take?

    +

    Plan for about 1.3 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 The Underground Rome Experience: San Clemente worth it?

    +

    It holds an Outty Ranking of 61 out of 100, which we label "Solid Choice". That score blends traveler sentiment (5/5 across 22 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Rome, and how flexible the cancellation terms are.

    Can I cancel or reschedule The Underground Rome Experience: San Clemente?

    +

    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 The Underground Rome Experience: San Clemente suitable for kids and families?

    +

    Yes, all ages are welcome. Families should still weigh the 1.3-hour running time, and strollers are easier on the earlier, quieter departures.

    How far in advance should I book The Underground Rome Experience: San Clemente?

    +

    Around 8 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?

    +

    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 1.3-hour experience runs outdoors or after sunset.

    Where does The Underground Rome Experience: San Clemente 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?

    +

    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?

    +

    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?

    +

    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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