Rome San Clemente Underground and Basilica Tour 90 min - Image 1
Rome San Clemente Underground and Basilica Tour 90 min - Image 2
Rome San Clemente Underground and Basilica Tour 90 min - Image 3
Rome San Clemente Underground and Basilica Tour 90 min - Image 4
Rome San Clemente Underground and Basilica Tour 90 min - Image 5
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Rome San Clemente Underground and Basilica Tour 90 min

TourTruth score 8.4 out of 10

Very goodTop 8% in Rome

193 reviews · Rated on 1 provider · How we score

  • Rome, Italy
  • 1 hr 30 min
  • Updated November 2, 2026

Descend beneath Rome’s San Clemente Basilica to explore ancient homes, a 4th-century church, and a Mithraic temple with a guide.

About this tour

Step beneath the streets of Rome to uncover centuries of history at San Clemente, where one remarkable site holds layers of the city’s past. This Rome San Clemente Underground and Basilica Tour begins in the 12th-century basilica, beneath its luminous gold mosaic, then leads down through the archaeological levels below.

Explore a long-forgotten 4th-century basilica, the remains of an ancient Mithraic temple, and ruins of Roman homes. The underground site reaches three levels, descending as much as 100 feet. An English-speaking guide brings the discoveries into focus, while headsets help you follow along when the group has at least five guests. The small group is limited to 15 guests or fewer, and entrance tickets are included.

The route involves stairs and uneven ground, so it may not suit guests with mobility issues. Arrive 15 minutes early and dress with covered knees and shoulders for entry to the basilica. Join this Rome San Clemente Underground and Basilica Tour to see the city’s history unfold beneath a single church.

Highlights

  • Admire the basilica’s gleaming gold apse mosaic
  • Descend through three layers of Rome’s history
  • Explore a 4th-century basilica and ancient Roman homes
  • See the remains of a pagan Mithraic temple

What's included

Included

  • English-speaking guide
  • Access to San Clemente underground levels
  • Archaeological site entrance tickets
  • Headsets when the group has at least 5 guests
  • Small group of 15 guests or fewer

Not included

  • Gratuities
  • Hotel pickup and drop-off

Ratings on each provider

The ratings and review counts each booking site shows for this tour.

Important information

  • Arrive 15 minutes before the booked start time; late arrivals cannot be accommodated
  • The route includes stairs and uneven terrain and is not recommended for guests with mobility issues
  • Cover knees and shoulders; shorts and sleeveless tops are not allowed inside places of worship
  • Meet outdoors near St. Clement’s Basilica at the corner of Via di S. Giovanni in Laterano, 126; look for the guide holding an EcoArt sign
  • The nearest metro stop is Colosseo on Line B
  • Public transportation is available nearby

How this score is calculated

This score is based on one provider. Viator rates it 4.92 from 193 reviews. We place that rating among all Viator ratings and weight it by its review count. If the tour is found on another provider later, both ratings are combined.

How the score works and rating distribution in Rome
  • Each provider rating is turned into a percentile: the share of that provider's ratings it beats, weighted by review counts.
  • Listings on different providers are combined in proportion to their review counts.
  • Tours with few reviews are pulled toward the average until more reviews come in, so a handful of perfect reviews can't top the list.
  • The result is shown from 0 to 10: this tour scores 8.4. Top 8% in Rome means it ranks in the top 8% of tours in Rome by this score.

Provider rating distribution in Rome

How many tours in Rome have a provider rating at or below each value. The dashed line is this tour.

  • Viator

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