Small-Group Tour at Underground Temples of St. Clement's Basilica
Active
2h
For a full refund, cancel at least 24 hours before the scheduled departure time.
Instant confirmation
Mobile or paper ticket accepted
About this experience
Discover the ancient treasures hidden below St. Clement’s Basilica that are overlooked by most visitors to Rome. Follow your guide three levels down to explore ancient pagan temples, the 1st-century home of St. Clement, and a 4th-century basilica with original frescoes—as well as an underground river. End with a tour of the 12th-century basilica above ground, known for its spectacular mosaics.
Delve into a hidden underground world of pagan and early Christian ruins
A guide to explain the layers of history beneath St. Clement’s Basilica
Time to explore the basilica above ground, including its famed mosaics
A small-group tour for a more intimate experience and personal attention
Available options
Regular French Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in French in a small group of maximum 16 people.<br/>Duration: 1 hour
Regular English Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in English in a small group of maximum 16 people.<br/>Duration: 1 hour
Regular Spanish Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in Spanish in a small group of maximum 16 people.<br/>Duration: 1 hour
Extended English Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Regular Portuguese Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in Portuguese in a small group of maximum 16 people.<br/>Duration: 1 hour
Extended Spanish Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Extended Italian Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Extended German Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Extended Portuguese Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Regular German Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in German in a small group of maximum 16 people.<br/>Duration: 1 hour
Extended French Tour
San Clemente + Santo Stefano: This option is for a guided tour of Basilica di San Clemente & Basilica di Santo Stefano Rotondo in a group of max 16 people.<br/>Duration: 2 hours
Regular Italian Tour
San Clemente: Select this option for a guided tour of Basilica di San Clemente in Italian in a small group of maximum 16 people.<br/>Duration: 1 hour
What's included
Headsets to hear the guide clearly
Expert live guide
Luggage deposit in our office for the duration of the tour
Guided tour of Santo Stefano Rotondo (only if this option is selected during purchase)
Entrance fees to the Basilica di San Clemente
Detailed itinerary
1
Stop 1
Embark on an unforgettable journey that begins at the breathtaking 12th-century basilica, where your expert guide will unveil the secrets behind the stunning golden mosaic in the apse, highlighting its spiritual significance. From there, descend 14 meters beneath the basilica to uncover the hidden 4th-century underground church, built directly on top of St. Clement's home, the third pope of Rome. Marvel at the early Christian frescoes, which depict the stories of martyrs and the struggles faced by the first Christians. Next, continue your descent to uncover one of Rome’s best-preserved Mithraic temples. This ancient treasure offers you a unique glimpse into the mysterious Mithraic cult, which thrived before the rise of Christianity. Let your guide bring this fascinating chapter of Roman history to life as they explain the cult’s intriguing rituals and beliefs. As you explore the site, you'll feel an eerie atmosphere, enhanced by an underground river that adds an element of mystery.
2
Stop 2
For a more in-depth experience, you can add an optional visit to the Basilica di Santo Stefano Rotondo to your tour. In 45 minutes, you’ll discover this architectural gem, known for its unique circular design. Inside, you'll be captivated by the vibrant frescoes that adorn the walls, each depicting dramatic scenes of early Christian martyrs. These striking images vividly portray the courage and sacrifices of saints who endured extraordinary trials for their faith. As your guide shares the stories behind these powerful artworks, you’ll gain a deeper understanding of the devotion and struggles that shaped Rome’s religious heritage.
What's not included
Hotel pick-up and drop-off
Food and drinks
Optional gratuities
Guided tour of Santo Stefano Rotondo (unless specifically chosen during purchase)
Available languages
Guide guide
DE
PT
EN
IT
FR
ES
Reviews breakdown
Viator
4.5
13 reviews
5★
10
4★
2
3★
0
2★
0
1★
1
Tripadvisor
5.0
8 reviews
5★
8
4★
0
3★
0
2★
0
1★
0
Important information
Public transportation options are available nearby
Specialized infant seats are available
Suitable for all physical fitness levels
An appropriate dress-code is required in order to enter the churches: knees and shoulders should be covered
This tour is subject to weather conditions and/or liturgic-calendar events. If canceled you will be given the option of an alternative date or full refund
Photography and filming inside the basilica’s is not allowed
Your phone should be on put on silence before visiting the basilica’s
If you choose to extend your tour with the optional visit to Santo Stefano Rotondo, please note that the itinerary may vary. Depending on the schedule, you may begin your visit at Basilica San Clemente and proceed to Santo Stefano Rotondo, or vice versa. Therefore, also the ending point may vary
It is recommended to wear comfortable shoes as there is a moderate amount of walking involved and you will be walking many steps and stairs
Pets are not allowed inside the basilica’s
We recommend you to bring your own headphones in order to minimise plastic waste
The frescoes inside the Basilica di Santo Stefano Rotondo depict graphic scenes of martyrdom and may not be appropriate for children
Please note that the extended option with Santo Stefano Rotondo may occasionally be unavailable due to special events or liturgical celebrations
Not recommended for customers with claustrophobia
Meeting point
Meet us at Piazza di San Clemente, 00184 Rome. Please arrive 5 minutes before your scheduled starting time. Look for a member of staff holding a yellow label.
Important notes
- Please know that the extended option with Santo Stefano Rotondo is available on all days except Mondays since the church is closed on Mondays
- Due to the architectural structures inside and under the Basilica di San Clemente, this tour unfortunately is not accessible to wheelchair users
- Due to the underground spaces within the Basilica di San Clemente, this tour may not be suitable for individuals with claustrophobia
- The frescoes inside the Basilica di Santo Stefano Rotondo depict graphic scenes of martyrdom and may not be appropriate for children
- If you choose to extend your tour with the optional visit to Santo Stefano Rotondo, please note that the itinerary may vary. Depending on the schedule, you may begin your visit at Basilica San Clemente and proceed to Santo Stefano Rotondo, or vice versa
- Please be at the meeting point 5 minutes before the tour starts
- An appropriate dress-code is required in order to enter the church: knees and shoulders should be covered
- This tour is subject to weather conditions and/or liturgic-calendar events. If canceled you will be given the option of an alternative date or full refund
- For environmental reasons, it is preferable that you bring your own earphones and do not print your voucher. We will provide earphones in case you forget yours
- We suggest you bring your own refillable bottle as you can find drinkable-water fountains everywhere in Rome
About Rome
Rome, the capital of Italy, is a city of ancient ruins, artistic masterpieces, and vibrant culture. Known as the Eternal City, it is a living museum where every corner tells a story of its rich history spanning over 2,500 years.
Top Attractions
Colosseum
The Colosseum is an iconic symbol of Rome and one of the most famous ancient amphitheaters in the world. It was used for gladiatorial contests and public spectacles.
Historical
1-2 hours
€16 (combined ticket with Roman Forum and Palatine Hill)
Vatican City
Vatican City is an independent city-state enclaved within Rome. It is the spiritual and administrative center of the Roman Catholic Church.
Religious
Half day
€17 (Vatican Museums and Sistine Chapel), Free (St. Peter's Basilica)
Roman Forum
The Roman Forum was the political, commercial, and legal hub of the Roman Republic and Empire. It is a sprawling ruin of temples, basilicas, and arches.
Historical
1-2 hours
€16 (combined ticket with Colosseum and Palatine Hill)
Pantheon
The Pantheon is a former Roman temple, now a church, known for its large dome and oculus. It is one of the best-preserved ancient buildings in Rome.
Historical
30 minutes to 1 hour
Free
Trevi Fountain
The Trevi Fountain is a Baroque masterpiece and the largest fountain in Rome. It is a popular spot for visitors to throw coins and make wishes.
Architecture
15-30 minutes
Free
Must-Try Local Dishes
Cacio e Pepe
A simple yet delicious pasta dish made with Pecorino Romano cheese and black pepper.
Pasta
Vegetarian
Carbonara
A rich pasta dish made with eggs, Pecorino Romano, guanciale (cured pork cheek), and black pepper.
Pasta
Contains pork and eggs
Supplì
Fried rice balls filled with mozzarella and tomato sauce.
Snack
Vegetarian (some variations may contain meat)
Carciofi alla Romana
Artichokes braised with garlic, mint, and olive oil.
Vegetable
Vegetarian
Popular Activities
Hiking in the Appian Way Regional Park
Biking along the Tiber River
Rock climbing in the nearby mountains
Picnicking in Villa Borghese Gardens
Boating on Lake Albano
Enjoying a spa day at a luxury hotel
Visiting the Vatican Museums
Attending an opera at the Teatro dell'Opera di Roma
Best Time to Visit
April to June, September to October
Spring and fall offer pleasant weather and fewer crowds compared to the summer peak. Ideal for sightseeing and outdoor activities.
15-30°C
59-86°F
Practical Information
Language
- Official: Italian
- Widely spoken: English, Spanish, French
- English: Moderately spoken
Currency
Euro (EUR)
Time Zone
GMT+1 (CET), GMT+2 (CEST during daylight saving time)
Electricity
230VV, 50HzHz
Safety Information
Overall Safety Rating: Generally safe
Rome is generally safe for tourists, but pickpocketing and scams can be a problem in crowded areas. Be aware of your surroundings and take precautions to protect your belongings.
Important Precautions:
- • Keep valuables secure and out of sight
- • Use official taxis or ride-sharing services
- • Be cautious of strangers approaching you with petitions or bracelets
Getting there
By air
- Leonardo da Vinci International Airport • 35 km from city center
- Ciampino Airport • 15 km from city center
By train
Roma Termini, Roma Tiburtina
By bus
Tiburtina Bus Station, Roma Termini
Getting around
Public transport
The metro system is efficient and covers major tourist areas. It operates from 5:30 AM to 11:30 PM.
Taxis
Available • Apps: Uber, FreeNow
Rentals
Car, Bike, Scooter
Neighborhoods
Trastevere
Monti
Prancipio
Testaccio
Day trips
Ostia Antica
30 km from Rome • Half day
An ancient Roman port city with well-preserved ruins, including a theater, baths, and mosaics. It offers a glimpse into daily life in ancient Rome.
Tivoli
30 km from Rome • Full day
A picturesque town known for its stunning villas and gardens, including the famous Villa d'Este with its elaborate fountains and gardens.
Orvieto
120 km from Rome • Full day
A charming hilltop town known for its stunning cathedral, underground caves, and local wine. It offers a mix of history, culture, and scenic views.
Festivals
Natale di Roma • April 21
Festa de' Noantri • July
Rome Film Festival • October
Pro tips
- Visit major attractions early in the morning or late in the afternoon to avoid crowds
- Use public transport or walk instead of taking taxis to save money and experience the city like a local
- Try local specialties and ask for recommendations from locals and restaurant staff
- Dress modestly when visiting religious sites and be respectful of local customs and traditions
- Be aware of pickpockets and scams, especially in crowded areas and tourist hotspots
From $25
per person
Price varies by option
Secure booking
Free cancellation available
Instant confirmation
