Beneath the bustling streets of Rome lies a treasure trove of ancient history. The underground temples at St. Clement’s Basilica offer visitors a chance to explore the captivating transition from pagan worship to early Christianity. Led by expert guides, small groups descend into the layered past, uncovering remnants of pagan temples and the 1st-century home of St. Clement himself. What secrets await those who venture below the surface?
Key Points

- Explore multiple layers of history, including pagan temples, the 1st-century home of St. Clement, and a 4th-century basilica beneath St. Clement’s Basilica.
- Discover remnants of a 1st-century temple dedicated to Mithras and a temple honoring the Egyptian goddess Isis, showcasing the transition from pagan to Christian worship.
- Uncover the ancient residence of St. Clement, featuring frescoes and pagan temple fragments, providing insights into the coexistence of Christian and pagan practices.
- Marvel at the stunning 4th-century frescoes in the upper church, depicting scenes from the life of Christ and biblical imagery.
- Ascend to the 12th-century basilica above ground, known for its remarkable mosaics and ornate architecture, offering a personalized exploration of the basilica’s history and artistry.
Exploring the Layers of History

As visitors descend into the underground layers of St. Clement‘s Basilica, they uncover a remarkable history.
First, they explore pagan temples from ancient Rome. Beneath these, they discover the 1st-century home of St. Clement, an early pope.
Further down, the 4th-century basilica’s original frescoes and an underground river come into view.
This multilayered site offers a unique window into Rome’s past, from its pagan origins to the rise of Christianity.
The expert guide brings these eras to life, guiding guests through the basilica’s remarkable archeological treasures.
Looking for more options in Rome? We've reviewed plenty of other experiences.
Discovering the Pagan Temples

Descending into the underground levels of St. Clement’s Basilica, visitors discover a captivating glimpse into Rome’s pagan past. Beneath the Christian church, the remains of ancient temples emerge, a testament to the city’s rich religious history.
Highlights include:
- The remnants of a 1st-century temple dedicated to the ancient Roman god Mithras
- Fragments of a temple honoring the Egyptian goddess Isis, with intricate carvings and statues
- Architectural features showcasing the transition from pagan to Christian worship spaces
- Insights into the complex religious landscape that shaped early Roman civilization
This hidden gem offers a fascinating exploration of Rome’s layered history, where the sacred and the secular intertwine.
Unearthing the 1st-Century Home of St. Clement
Beneath the serene 4th-century basilica, visitors uncover a remarkable 1st-century treasure – the former home of St. Clement, the 4th Pope of Rome. Winding down stone staircases, guests explore the ancient residence, whose walls still bear the markings of early Christian history.
| Discovered Artifacts | Architectural Details | Historical Significance |
|---|---|---|
| Frescoes depicting biblical scenes | Vaulted ceilings and intricate masonry | Provides insight into the lives of early Christians in Rome |
| Remnants of pagan temples | Multiple levels and underground spaces | Reveals the coexistence of Christian and pagan practices |
| Remnants of an underground river | Preserved brick and mortar construction | Demonstrates the evolution of the site over centuries |
The 1st-century home offers a tangible connection to the past, allowing visitors to step back in time and enjoy the rich history of early Christianity in Rome.
Marveling at the 4th-Century Basilica Frescoes

Visitors ascending the stone steps of St. Clement’s Basilica are greeted by a stunning sight – the 4th-century frescoes adorning the walls of the upper church.
These vibrant religious paintings depict:
- Scenes from the life of Christ
- Intricate biblical imagery
- Symbols of early Christianity
- Portraits of saints and popes
The frescoes, remarkably well-preserved, offer a glimpse into the basilica’s rich history and the devotion of its medieval worshippers.
Guests marvel at the artistic mastery and the enduring spiritual essence captured within these ancient walls, a testament to the enduring legacy of the basilica.
Visiting the 12th-Century Basilica Above Ground

After exploring the captivating 4th-century frescoes, visitors then ascend to the 12th-century basilica above ground.
This stunning Romanesque structure is renowned for its remarkable mosaics. Guests can marvel at the intricate designs and vibrant colors that adorn the walls and ceilings.
The basilica’s impressive architecture, including its towering columns and ornate altars, creates an awe-inspiring atmosphere. Visitors can take their time to soak in the rich history and artistry of this sacred space.
The intimate tour group size allows for a personalized experience and ample opportunities to ask questions and delve deeper into the basilica’s significance.
- Rome: Colosseum, Roman Forum and Palatine Hill Fully Guided Tour
- Pompeii Day Trip From Rome With Mount Vesuvius or Positano Option
- Skip-the-Line Group Tour of the Vatican, Sistine Chapel & St. Peters Basilica
- Pizza Cooking Class in Rome – Near Piazza Navona
- Cooking Class in the Heart of Rome: Pizza and Tiramisu Making
- Pasta Cooking Class in Rome – Fettuccine Class in Piazza Navona
Experiencing an Intimate Tour With Expert Guidance

What makes the small-group tour at St. Clement’s Basilica special is the intimate experience and expert guidance. With a maximum of 16 travelers, the tour offers:
- Knowledgeable live guides who provide fascinating insights into the site’s layers of history
- Headsets for clear communication, ensuring you don’t miss a word
- Luggage deposit, so you can explore hands-free
- A hidden gem experience for history enthusiasts and families alike
Guests appreciate the tour’s attention to detail and the guide’s ability to bring the ancient treasures to life.
Whether you’re exploring the pagan temples, the 1st-century home of St. Clement, or the 4th-century basilica, this small-group experience is a must for anyone seeking an in-depth understanding of Rome’s rich past.

Although the St. Clement’s Basilica tour isn’t wheelchair accessible, it’s conveniently located near public transport.
Infant seats are available, and most travelers can participate. The tour requires moderate walking, so comfortable shoes are recommended. Guests should dress modestly with knees and shoulders covered.
It’s important to note that the tour isn’t suitable for those with claustrophobia, as it includes exploring the underground spaces. Guests should arrive at the meeting point 5 minutes before the tour start time.
Photography is prohibited inside the basilicas, and phones should be kept on silent. The tour is subject to weather and liturgical calendar changes.
Frequently Asked Questions

How Many People Are Typically in the Small Group?
The tour typically has a maximum of 16 travelers, providing an intimate experience to explore the ancient treasures at St. Clement’s Basilica in Rome.
Can I Take Photos Inside the Basilicas?
Photography is not allowed inside the basilicas. Guests must keep their phones on silent during the tour. However, they can take photos outside the basilicas to capture the beautiful architecture and surroundings.
Is There a Dress Code for the Tour?
The tour has a modest dress code – visitors must cover their knees and shoulders. This allows access to the sacred spaces while respecting the site’s religious and cultural significance.
What Happens if the Tour Is Canceled Due to Weather?
If the tour is canceled due to weather, you’ll receive a full refund or can rebook on an alternative date. The tour operator prioritizes flexibility to ensure guests have a smooth and enjoyable experience.
Can I Bring My Own Headset for Better Audio?
The tour doesn’t allow guests to bring their own headsets. The provided headsets ensure clear communication with the guide. If the tour is canceled due to weather, you’ll get a full refund or can reschedule for another date.
The Sum Up
Exploring the underground temples of St. Clement’s Basilica offers a captivating journey through Rome’s layered past. Guided by experts, visitors can discover the remarkable remnants of pagan temples, the 1st-century home of St. Clement, and stunning 4th-century frescoes. This small-group tour provides an intimate and immersive experience, allowing visitors to step back in time and witness the intriguing transition from pagan worship to early Christianity.
More Tours in Rome
- Rome: Private Walking Tour with a Local
- Rome: Exclusive Private Tour of St. Peters Basilica
- Rome: Vespa tour When in Rome with Dessert and Photography
- Rome: Small Group Walking Tour in English or Spanish
- Rome: Capuchin Crypts & Ghostly Legends Small Group Tour
- St.Peter’s Basilica & Vatican Grottoes: Guided Tour in Rome
More Tour Reviews in Rome
Still browsing? Here are more Rome experiences we've covered recently
- 13 Fantastic Wine Tours In Rome
- 14 Top Private Driver Services In Rome (With Reviews & Prices)
- Which Rome Shore Excursions To Choose? Our Best 6 Picks
- The 14 Most Popular City Tours In Rome
- Which Rome Tours & Experiences To Choose? We Rank The 14 Best
- 14 Must-Try Cruises And Boat Tours In Rome
- Discover 14 Great Tours In Rome
- 12 Best Walking Tours In Rome (With Reviews & Prices)
- 14 Of The Best Shopping & Market Tours In Rome
- The Top 13 Rome Workshops & Classes
- 14 Must-Try Lunch Experiences In Rome
- Our 14 Favorite Rome Motorbike And Scooter Rentals
