Rome Underground Temples Tour

From€75
2 hours
Province of Rome, Italy

About this activity

Delve into Rome's rich history with a guided tour of St. Clement's Basilica, its hidden Mithraic Temple, and the Archbasilica of St. John Lateran, uncovering early Christian artifacts and architecture.

Highlights

  • Explore St. Clement's Basilica's hidden layers
  • Discover ancient Mithraic Temple beneath St. Clement's
  • Visit the grand Archbasilica of St. John Lateran
  • Learn about Rome's early Christian history
  • Experience Rome's rich archaeological heritage

Full description

Step back in time and uncover Rome's ancient secrets on this captivating walking tour. Begin at St. Clement's Basilica, a 12th-century church built atop earlier structures, including a 4th-century church and a 2nd-century pagan temple. Descend into the Mithraic Temple beneath St. Clement's, where you'll marvel at well-preserved frescoes and learn about the ancient Roman cult of Mithras. Then, visit the Archbasilica of St. John Lateran, the oldest of Rome's four major basilicas, to admire its stunning architecture and rich history. This tour offers a unique glimpse into Rome's layered past, blending art, archaeology, and early Christian heritage.

Included / Excluded

  • Guided tour of St. Clement's Basilica
  • Visit to Mithraic Temple beneath St. Clement's
  • Entry to Archbasilica of St. John Lateran
  • Meals and beverages

Meeting point

Start Location

Unknown location

Important information

Know before you book

  • The tour is conducted in English; ensure you understand the language.
  • Check the meeting point and time carefully to avoid delays.
  • Be prepared for some stairs and uneven terrain during the tour.

Know before you go

  • Wear comfortable walking shoes for uneven surfaces.
  • Bring a bottle of water to stay hydrated during the tour.
  • Photography may be restricted in certain areas; please follow the guide's instructions.

Cancellation policy

Free cancellation up to 1 days before the activity starts

For a full refund, cancel at least 24 hours before the scheduled departure time.

Accessibility

  • Easy Public Transport
  • Infant Seats Available

Good to know

  • Please note: In the event that certain areas of one of the churches are closed, your guide will adapt the itinerary by highlighting alternative sites. As a result, the overall duration will remain unchanged
  • An appropriate dress-code is required in order to enter the churches: knees and shoulders should be covered.
  • Wear comfortable walking shoes: a moderate amount of walking is involved.
  • This tour is not wheelchair-accessible.
  • 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.

Traveler reviews

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Mario was incredibly...

Mario was incredibly knowledgeable and one of our favorite tour guides. It was nice just being the two of us. The Relics were still unable to be viewed which was a bummer but not in the tour’s control

Kyle_HSep 1, 2026VIATOR

Daniel was our guide and...

Daniel was our guide and he did such a great job! We ended up being the only 2 on the tour so we received personalized service - even found one of the public water fountains for us to fill our water bottles! Lots of walking and extremely hot, but exactly what we wanted to see. Thank you!

Jennifer_DAug 20, 2026VIATOR

Unique tour

Going deep to history of church and relics . Nice tour with 4 people group and Daniel our tour guide was very educated. We loved it …

Parastoo_SAug 18, 2026VIATOR

Very knowledgeable and...

Very knowledgeable and friendly. Great way to see some of the best churches in Rome. Great for solo, family and friends as well.

Reid_WAug 2, 2026VIATOR

Not as described

Unfortunately the reason we did the tour was because of the Christian relics including the wood from the cross, nail from crucifiction, thorns from the crown, and the wooden sign saying “King of the Jews” that was above the cross. None of those things were shown on the tour. When we asked about them half way through the tour, we were told it was at the first location we visited but not available for viewing. Then in another church we visited, we were told there was the seat of Jesus at the last supper in the room that cost $3 to see but wasn’t part of our tour. Why was that not part of our tour. We wouldn’t have cared about paying $3. Add our guide was very cynical in his delivery of information. He spoke perfectly English as he was from America, but I had a much harder time following his delivery than any of the other tour guides with a strong accent. I felt like I was back in college in history class where the professor had a wealth of knowledge but spoke down to the class. I walked away feeling like I learned nothing and probably missed a lot of valuable knowledge because of the cynical delivery.

Rebekah_SJul 26, 2026VIATOR

Additional information

Please be at the meeting point 5 minutes before the tour starts in order to complete the signup and setup the headsets. An appropriate dress-code is required in order to enter the churches: knees and shoulders should be covered. Wear comfortable walking shoes: a moderate amount of walking is involved. This tour is not wheelchair-accessible. 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.