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Rome San Clemente Underground Tour

TourTruth score 6.9 out of 10

Average

3 reviews · Rated on 1 provider · How we score

  • Rome, Italy
  • Updated November 2, 2026

Explore the archaeological layers beneath San Clemente, with an optional guided visit to the frescoed Roman Houses on the Caelian Hill.

About this tour

Step beneath the streets of Rome to uncover centuries of history at the Basilica of San Clemente. This guided Rome San Clemente Underground Tour reveals the city’s past through the archaeological layers below the basilica, where different eras sit one beneath another. Meet your guide after checking in at the C.I.S. Tourist Office, then explore the underground site with headphones to follow the stories and details along the way.

For a deeper look at Rome’s changing culture, choose the option that adds a guided visit to the Roman Houses on the Caelian Hill. These historic homes offer a striking glimpse of the transition from paganism to Christianity, with original frescoes preserved among their rooms. The Roman Houses visit and guide are available only with the relevant option.

Wear warm, comfortable clothes for the underground levels, and remember to cover your shoulders and knees inside places of worship. Arrive 20 minutes before your selected start time. Choose the Rome San Clemente Underground Tour to experience the city’s history from below, with the option to continue among the frescoes of the Caelian Hill.

Highlights

  • Descend through the archaeological layers beneath the Basilica of San Clemente
  • Trace Rome’s history through underground levels
  • Add a guided visit to the Roman Houses on the Caelian Hill
  • Admire original frescoes in the Roman Houses

What's included

Included

  • Basilica of San Clemente underground ticket
  • Headphones
  • Taxes and fees
  • Basilica of San Clemente guide, if selected
  • Roman Houses on the Caelian Hill ticket, if selected
  • Roman Houses on the Caelian Hill tour, if selected

Not included

  • Transport
  • Food and drink

Ratings on each provider

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

Important information

  • Present your voucher at the C.I.S. Tourist Office, Via dei SS. Quattro 75, 20 minutes before your chosen start time
  • Wear warm, comfortable clothing for the underground levels
  • Cover shoulders and knees when entering places of worship
  • Several underground levels may not be suitable for people with claustrophobia, pregnant travelers, or people with mobility difficulties
  • Public transportation options are available nearby
  • The visit is described as suitable for all physical fitness levels

How this score is calculated

This score is based on one provider. Viator rates it 4.00 from 3 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 6.9.

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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