Basilica of Saint Clement in Rome: All You Need to Know to Visit the Basilica di San Clemente al Laterano (Tickets, Opening Hours, How to Get There)

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Planning to visit the Basilica of San Clemente in Rome? Excellent choice, it’s one of the most fascinating (and often overlooked) sites in the Eternal City.

Located just a few minutes from the Colosseum, this ancient church (also known as the Basilica di San Clemente al Laterano) hides three underground levels that tell the story of nearly 2,000 years of Roman history: a 12th-century medieval basilica, a 4th-century early Christian church, and, deep below, the remains of a Roman house and a temple dedicated to the god Mithras.

As you descend beneath the church, you literally travel back in time, from the Middle Ages to ancient Rome, surrounded by 12th-century mosaics, 11th-century frescoes, Latin inscriptions, and damp underground corridors that still breathe history. It’s a truly unique experience in Rome.

In this complete guide, you’ll find everything you need to plan your visit to the Basilica of San Clemente in Rome:

• the prices of Basilica of San Clemente tickets and the best guided tour options,
• opening hours and tips to avoid the crowds,
• the Basilica di San Clemente location and how to get there,
• plus the best nearby attractions to visit after.

👉 Follow the guide and discover why the Basilica di San Clemente deserves a spot on every Rome itinerary.

What to See Inside the Basilica of San Clemente in Rome

Visiting the Basilica di San Clemente al Laterano is a truly unique experience. Few places in Rome capture so vividly the city’s historical layers, from ancient Rome to early Christianity, the Middle Ages, and beyond.

The Upper Basilica (twelfth century)

As soon as you step into the current church, you’re struck by its Romanesque elegance and peaceful atmosphere. Built in the twelfth century, the upper basilica feels timeless. The main nave, lined with ancient marble columns reused from Roman temples, naturally draws your eyes toward the apse, home to one of Rome’s most magnificent mosaics.

That mosaic, known as the Triumph of the Cross, is the basilica’s crown jewel. Against a shimmering gold background, Christ on the Cross stands surrounded by doves, vines, and biblical symbols. Just below, you’ll notice twelve white doves representing the Apostles and, at the center, the Tree of Life, symbolizing resurrection and renewal. Even if religious art isn’t your thing, it’s hard not to feel moved by such beauty.

Don’t forget to look down, the geometric marble floor is a masterpiece in itself. It’s an example of Cosmatesque design, a style typical of medieval Roman churches where artisans combined colored marble and stone fragments into intricate, hypnotic patterns. The result looks almost like a royal mosaic carpet.

Before you leave the upper level, make sure to visit the Chapel of Saint Catherine on the right-hand side. Inside, you’ll find frescoes by Masolino da Panicale, one of the pioneers of early Renaissance painting. They depict scenes from the life of Saint Catherine of Alexandria, painted with striking detail and light. Many visitors call it the “small Sistine Chapel” of San Clemente and it’s easy to see why.

The Lower Basilica (4th century)

Now, head down to the lower level, and you’ll feel the atmosphere shift completely. The air grows cooler, the light dimmer, and the ancient walls seem to whisper stories from another era.

Here you’re standing inside the original 4th-century church of Saint Clement, built shortly after the end of Christian persecution. It’s a powerful place, quieter, more intimate, and full of traces of the first centuries of Christianity in Rome.

The highlight of this level is the set of 11th-century frescoes, still beautifully preserved in parts. The most famous one depicts the Legend of Sisinnius, showing the pagan prefect attempting to arrest Saint Clement.

What makes it even more fascinating is a small linguistic detail: the fresco includes the earliest known example of written Italian vernacular, a blend of Latin and everyday Roman speech. You can actually read the humorous outburst “Fili de le pute, traite!”, roughly “Pull, you sons of whores!”, proof that even medieval artists had a sense of humor 😄!

You’ll also see scenes from the life of Saint Clement, who was both pope and martyr, as well as frescoes of Saint Alexius. Despite the humidity and the passing centuries, many of these paintings have survived remarkably well.

Beneath the main altar lies the tomb of Saint Cyril, one of the two missionary brothers who created the Cyrillic alphabet. It’s a meaningful pilgrimage site for many visitors from Eastern Europe.

The Temple of Mithras and the Roman Ruins

Go down one more flight of stairs, and you’ll find yourself back in ancient Rome. This is where the 1st-century Roman ruins and the famous Temple of Mithras are hidden beneath the basilica.

The Mithraic cult was a secret religion that became especially popular among Roman soldiers. The god Mithras symbolized light, courage, and victory over darkness, values that resonated deeply in the Roman Empire.

The underground chamber is small, vaulted, and almost claustrophobic. At its center stands the altar of the Mithraeum, carved with the iconic scene of tauroctony, Mithras slaying the sacred bull, a powerful symbol of rebirth and triumph. On either side, you can still see two long stone benches where initiates would sit during secret rituals.

Next to the temple, you’ll find the remains of a Roman house (domus) and what was once a warehouse. Listen closely, and you might hear the faint murmur of water flowing below: an ancient canal still fed by the Cloaca Maxima, Rome’s great sewer system. It’s an oddly soothing sound that adds to the mysterious, timeless atmosphere of the place.

The feeling here is unlike anywhere else in Rome, damp, silent, and deeply evocative. Standing in these ruins, you can almost sense the origins of the Eternal City beneath your feet.

Tickets for the Basilica of San Clemente in Rome

Entry Price for the Basilica di San Clemente

Good news, admission to the upper basilica is completely free. You can admire its mosaics, Cosmatesque marble floor, and peaceful Romanesque atmosphere without spending a cent.

However, to truly experience what makes this site so extraordinary, that is, descending into the 4th-century basilica and the underground Temple of Mithras, you’ll need a ticket.

• Tickets cost €10 for adults (see booking options here >>) 
• and are free for children under 16.

Discounts are sometimes available for students and school groups, so it’s worth asking at the entrance. Each ticket grants you full access to all three levels: the upper basilica, the lower basilica, and the archaeological area beneath.

A quick tip: keep your ticket handy, as it will be checked again before you go down to the underground sections.

Where to Buy Tickets for the Basilica of San Clemente

You have two options to get your Basilica of San Clemente tickets:

• On-site, at the ticket counter: You can buy your ticket directly at the entrance, but be aware that the number of visitors allowed in the underground areas is limited. This restriction helps preserve the ancient frescoes and maintain a stable temperature below ground. During high season, it’s common for time slots to be fully booked when you arrive.
  
• Online (highly recommended): Booking online lets you secure your time slot, skip the queues, and avoid the disappointment of sold-out entries. It’s also easier to compare ticket types (standard entry, combo, or guided tour) and often benefit from discounted prices (check available options here >>).

Guided Tours of the Basilica of San Clemente

Want to truly understand what you’re looking at when visiting the Basilica of San Clemente in Rome? Then skip the self-guided visit and book a guided tour instead. 

It’s by far the best way to explore 2,000 years of Roman history and uncover the secrets hidden beneath this ancient church.

Here are three tried-and-tested guided tours that are absolutely worth it 👇

1. Guided Tour of the Basilica of San Clemente and the Church of San Pietro in Vincoli

This tour takes you through all three levels of the Basilica di San Clemente, from the twelfth-century medieval church down to the ancient Temple of Mithras buried deep below.

You’ll learn how Rome was literally built on top of itself, layer after layer, as your expert guide explains the meaning behind the medieval frescoes, the twelfth century mosaics, and the mysteries of the Mithraic cult.

But that’s not all, the tour also includes a visit to the Church of San Pietro in Vincoli (St. Peter in Chains), famous for housing Michelangelo’s monumental statue of Moses.

In short, it’s a captivating journey through art, faith, and ancient history.

Duration: around 1.5 hours. Perfect if you want to see two major sites without rushing.

Check the latest prices and availability for your dates >>

2. Underground Temples Tour of the Basilica of San Clemente

If you love hidden places and mysterious atmospheres, this one’s for you.

You’ll descend about 14 meters underground to explore the ancient Roman temples buried beneath the basilica.

Your guide will lead you through 4th-century frescoes, the remains of a Roman house (domus), and the Temple of Mithras, where the altar still depicts the famous scene of the god sacrificing the sacred bull.

Listen closely, and you might even hear the soft murmur of water running through the Cloaca Maxima, Rome’s ancient sewer system that’s still active today!

It’s an almost archaeological experience, told with passion and clarity by your guide.

Duration: 1 to 2 hours depending on the option chosen. Available in English, French, Italian, and other languages.

Check the latest prices and availability for your dates >>

3. Semi-Private Tour: Catacombs and Underground Levels of San Clemente

This is the most complete tour for travelers who want to explore two of Rome’s most fascinating underground worlds.

You’ll start with the three levels of the Basilica of San Clemente, guided by an expert who brings the site’s 2,000 years of history to life, from the twelfth-century basilica to the 4th-century church below, and finally the pagan Temple of Mithras at the deepest level.

Then, the experience continues at the Catacombs of Domitilla, among the most impressive in Rome, where the city’s earliest Christians were buried.

The tour runs in small groups (max 10 people) and includes transportation and pickup, perfect if you want a stress-free, immersive half-day adventure.

Duration: around 3 hours. Ideal for travelers looking for a rich and unforgettable cultural experience.

Check the latest prices and availability for your dates >>

What is the Basilica of San Clemente in Rome? (History of the Basilica di San Clemente al Laterano)

If you love places that hide layers of history beneath their stones, the Basilica di San Clemente al Laterano will absolutely fascinate you.

Imagine a single site made up of three stacked levels, each representing a different era of Rome’s past:

• the current basilica from the twelfth century,
• an older 4th-century church,
• and, deep underground, 1st-century Roman buildings, including a temple dedicated to the god Mithras.

That’s what makes the Basilica of San Clemente so unique in Rome, with every staircase you descend, you travel further back in time.

The Origins of the Site

It all began at the turn of the 1st century AD, when Christianity was still forbidden in the Roman Empire. On the site where the basilica now stands once stood a Roman domus (house) belonging to Titus Flavius Clemens, a Roman senator who had converted to Christianity.

This private home served as a secret meeting place for early Christians, long before their faith was officially recognized. Right next to it stood a pagan temple dedicated to Mithras, an Eastern god associated with the sun, strength, and courage, a mysterious cult that had spread from Persia through the Roman legions.

After the Edict of Milan in 313 AD, which granted freedom of worship, the house was transformed into the first church of Saint Clement, blessed by Pope Siricius at the end of the 4th century. It became one of the earliest Christian worship sites in Rome, built quite literally on the ruins of a still-pagan world.

The Different Stages of Construction

Like many Roman buildings, the Basilica of San Clemente has lived several lives.

The first basilica, built in the 4th century, featured three naves, an apse, and remarkable frescoes. Over time, it was enlarged and beautifully decorated, until it was partially destroyed during the sack of Rome in 1084 by the Normans led by Robert Guiscard.

To preserve what remained, Pope Paschal II decided in the twelfth century to build a new church directly on top of the old one. This upper basilica was completed in 1108, becoming one of the most beautiful examples of Romanesque architecture in Rome.

Centuries later, under Pope Clement XI, architect Carlo Fontana gave the church its current Baroque façade at the beginning of the 18th century, complete with antique columns and an elegant bell tower that still dominates the street today.

A Basilica Within a Basilica

What makes the Basilica of San Clemente in Rome truly special is this layered structure of history. As you descend each staircase, you move through time:

• from the 12th-century upper basilica, bright and adorned with golden mosaics,
• to the 4th-century lower basilica, darker and decorated with medieval frescoes,
• and finally to the 1st-century Roman foundations, where you can still see the walls of an ancient warehouse and the Temple of Mithras.

It’s like flipping through a living history book, each level revealing a different chapter: ancient Rome, the early Christians, and medieval faith.

During excavations that began around 1860, archaeologists uncovered astonishingly well-preserved frescoes, mosaic fragments, and even an ancient water channel still fed by the Cloaca Maxima, Rome’s ancient sewer system.

These discoveries confirmed that the Basilica of San Clemente isn’t just a religious monument, it’s one of Rome’s most fascinating archaeological sites, where history, faith, and art intertwine beneath your feet.

Basilica of San Clemente Opening Hours (and the Best Time to Visit)

The Basilica di San Clemente in Rome is a fascinating site to explore, but its opening hours can be a bit confusing, especially since the church and the underground levels don’t follow the same schedule. Here’s everything you need to know to plan your visit properly.

Opening Hours of the Basilica

The main basilica (the one you see from Via di San Giovanni in Laterano) is open every day, usually :

• from 9:00 a.m. to 12:30 p.m.
• and from 2:00 p.m. to 6:00 p.m.

Morning Mass is celebrated regularly, so if you just want to visit, try to avoid service times.

Insider tip: Arrive before noon if you want enough time to explore without being politely ushered out by the monks at 12 sharp!

Opening Hours of the Underground Archaeological Site

The archaeological excavations beneath the Basilica of San Clemente have slightly different hours (always check the official website before your visit), since staff are required for access and supervision.

They are generally open:

• Monday to Saturday: 9:00 a.m. – 12:30 p.m. and 2:00 p.m. – 6:00 p.m.
• Sundays and public holidays: 12:00 p.m. – 6:00 p.m.

The last entry is about 30 minutes before closing, since it takes time to go down, explore, and climb back up.

It’s best to arrive early so you can enjoy the experience fully without having to rush through the different levels.

When Is the Best Time to Visit the Basilica of San Clemente in Rome?

If you want to make the most of your visit, it’s best to avoid peak hours and the hottest times of day. Here are a few practical tips to help you plan your visit like a pro:

Best Time of Day

• Morning (9:00–10:30 a.m.) – the basilica is quiet and peaceful, perfect for taking in the atmosphere.
• Late afternoon (around 4:30 p.m.) – the sunlight beautifully illuminates the porch and mosaics, creating magical reflections inside.

Best Day of the Week

• Tuesday or Wednesday are ideal, since most tourists are at the Colosseum or the Vatican.
• Weekends tend to be busier, especially Sunday after Mass, when both locals and visitors stop by.

Best Season to Visit

• Summer: The underground levels stay cool all year round (around 15°C / 59°F), making them a refreshing escape from the Roman heat.
• Winter: Bring a light jacket , the air below ground is damp and can feel chilly.

How Long Does It Take to Visit the Basilica of San Clemente?

To enjoy the experience without rushing:

• 30-45 minutes for the upper basilica only,
• 1 to 1.5 hours if you also explore the underground levels,
• At least 2 hours for a full guided tour.

Tip: Leave yourself some extra time before or after your visit to stroll around the Lateran district. The neighborhood is full of charming cafés and small trattorias, perfect for a relaxing break before continuing your Roman adventure.

Where Is the Basilica of San Clemente in Rome?

The Basilica di San Clemente al Laterano is located in the Celio district, just a few steps from the Colosseum and the Basilica of St. John Lateran.

• Address: Via Labicana, 95 – 00184 Rome, Italy

It’s in a prime location, right in the heart of ancient Rome, surrounded by iconic landmarks. You can easily combine your visit to San Clemente with stops at the Colosseum, Arch of Constantine, or even a quick detour to Nero’s Domus Aurea.

How to Get to the Basilica of San Clemente in Rome

The basilica is very easy to reach, whether you’re walking or using public transport. Here are the best options 👇

• By Metro: Take Line B to Colosseo Station. Once you exit, it’s just a 5-minute walk up Via di San Giovanni in Laterano, you’ll see the basilica’s façade straight ahead.
• By Bus: Several lines serve the area: 85, 87, 117, 186, 810, and 850. Get off at San Clemente / Colosseo on Via Labicana, the basilica entrance is right nearby.
  If you’re using a Rome hop-on hop-off bus, simply get off at the Colosseum stop and walk a few minutes to the ancient church.
• On Foot: From the Colosseum: 5 minutes. From St. John Lateran Basilica: about 10 minutes. From the Palatine Hill or Domus Aurea: around 15 minutes of easy walking
• By Car: Not recommended. Like most of central Rome, this area is part of a ZTL (Limited Traffic Zone), driving without a permit can result in hefty fines. It’s best to use Rome public transport (check the Roma Pass for discounts) or simply walk.

Practical Information and Visitor Rules

• Accessibility: The upper basilica is partially accessible to wheelchair users via a discreet side ramp (staff can assist if needed). However, the underground archaeological levels are not accessible, as the stairways are narrow and often slippery.
• Photography: Photos and videos are not allowed, especially in the underground areas, so you’ll have to rely on your memory, not Instagram!
• Dress Code: As in most Roman churches, shoulders and knees must be covered.
• Bags: Large bags and tripods are not permitted in the underground levels.

What to See and Do Near the Basilica of San Clemente in Rome

You’re in one of the most history-packed neighborhoods in all of Rome — the perfect area for a walking tour full of ancient monuments and hidden gems.

Here are the 7 best places to visit near the Basilica of San Clemente 👇

• The Colosseum : Just a 5-minute walk away, it’s the ultimate must-see attraction. If you haven’t visited the inside yet, this is your chance, nothing compares to standing inside Rome’s most iconic monument.
• The Arch of Constantine : Located right between the Basilica and the Colosseum, this triumphal arch celebrates Constantine’s victory over Maxentius in 312 AD. It’s one of the best-preserved monuments of ancient Rome.
• The Basilica of St. John Lateran : About a 10-minute walk from San Clemente, this is the Pope’s official cathedral, not St. Peter’s! The massive statues and baroque interior are stunning. Don’t miss the Scala Santa (Holy Stairs) nearby, where pilgrims traditionally climb on their knees.
• Nero’s Domus Aurea : Roughly 15 minutes on foot, these are the remains of Emperor Nero’s extravagant “Golden House.” Visits are by guided tour only, but they’re absolutely worth it, except VR headsets, 3D models, and an immersive archaeological experience.
• The Palatine Hill : Another ancient highlight, located right next to the Colosseum. This is where the Roman emperors built their palaces, and the views over the Roman Forum are simply breathtaking.
• Colle Oppio Park : A small, peaceful park just behind the basilica, perfect for a picnic or a short break. You’ll even get a beautiful view of the Colosseum framed by trees.
• The Basilica of St. Peter in Chains (San Pietro in Vincoli) : About a 10-minute walk away, this hidden gem houses one of Michelangelo’s masterpieces: the monumental statue of Moses, a sculpture so powerful it feels alive. It’s one of the most underrated churches in Rome and a true must-see.

FAQ – Visiting the Basilica of San Clemente in Rome

Do you need to book in advance to visit the Basilica of San Clemente?

Not for the main basilica, but it’s highly recommended for the underground areas. Visitor numbers are limited, and time slots often sell out during peak season.

Can you take photos inside?

No. Photography and video are strictly prohibited inside both the basilica and the archaeological levels. This helps protect the ancient frescoes and mosaics.

Is the visit suitable for children?

Yes, the upper basilica is easy to visit as a family. However, the underground areas are dark and have narrow stairways, so they’re not ideal for very young children.

What’s the difference between San Clemente and St. John Lateran?

The Basilica of San Clemente is a medieval church built on three historical levels, famous for its frescoes and underground ruins. St. John Lateran Basilica, located about a 10-minute walk away, is the Pope’s cathedral and the oldest basilica in Rome. They’re two distinct sites and both are worth visiting.

How long does a full visit take?

Plan about 1.5 to 2 hours to explore everything, including the upper basilica, the lower levels, and the Mithraeum.

Can you visit the Mithraeum without a combo ticket?

Yes. The Temple of Mithras is included in the standard €10 ticket for the underground areas; no combined ticket is required.

Are Masses held at the basilica?

Yes, daily Masses take place in the upper basilica. If you’re there to sightsee, it’s best to avoid those times for a quieter visit. Would you like me to now write the conclusion section for this article, something engaging that wraps up the visit and encourages readers to include San Clemente in their Rome itinerary?