TourTruth score 9.5 out of 10
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Rome Underground Basilicas Walking Tour 2 hr 30 min
TourTruth score 7.3 out of 10
AverageTop 35% in Rome
3 reviews · Rated on 1 provider · How we score
- Rome, Italy
- 2 hrs 30 min
- Updated November 2, 2026
Explore Rome’s basilicas, Byzantine mosaics, and ancient underground layers on a guided walk ending at San Clemente.
About this tour
Discover Rome’s hidden history on a 150-minute small-group walking tour through remarkable basilicas and ancient underground sites. Begin at Santa Maria Maggiore, then visit Santa Prassede to admire its Byzantine mosaics and the column traditionally associated with Christ’s flagellation. Continue to San Martino ai Monti, where you can descend beneath the church to see the remains of an early Christian place of worship.
Cross Oppian Hill for a distinctive view of the Colosseum before reaching the Basilica of San Clemente. With the entry ticket included, explore its archaeological layers: the 12th-century basilica, a 4th-century church below it, and ancient Roman buildings that include a preserved Mithraic temple. An English-speaking guide leads the walk, connecting the city’s sacred spaces with the history beneath its streets.
Meet beneath the column in front of Santa Maria Maggiore. Some churches may close without prior notice. Choose this Rome underground basilicas walking tour to see a quieter, richly layered side of the city.
Highlights
- Admire Byzantine mosaics at Santa Prassede
- Explore the underground remains beneath San Martino ai Monti
- Walk across Oppian Hill for a view of the Colosseum
- Descend through San Clemente’s layered history
- See a preserved ancient Roman Mithraic temple
What's included
Included
- San Clemente entry ticket
Ratings on each provider
The ratings and review counts each booking site shows for this tour.
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View on ViatorViator
5.00 / 5 · 3 reviews
Important information
- Meet in Piazza Santa Maria Maggiore, beneath the column in front of the Basilica of Santa Maria Maggiore
- Some churches may close without prior notice
- Service animals are allowed
- Public transportation is available nearby
- Suitable for all physical fitness levels
How this score is calculated
This score is based on one provider. Viator rates it 5.00 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 7.3. Top 35% in Rome means it ranks in the top 35% 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.
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- Viator
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