Italy · Archaeology

3-Hour Rome Underground Tour with San Clemente and Caelian Houses

3 Hours Round trip from Piazza di S. Clemente Hard pace

The journey

Trip highlights
  • 01 Discover the remarkable layers of history inside the Basilica of San Clemente, where Roman, early Christian, and medieval structures exist within one complex.
  • 02 Admire the magnificent 12th-century Tree of Life mosaic that decorates the apse of the upper basilica.
  • 03 Explore the underground Paleo-Christian church and observe frescoes that preserve some of the earliest examples of written Italian vernacular.
  • 04 Descend to the first-century Roman level to walk through ancient buildings and a hidden Mithraic temple dedicated to Mithras.
  • 05 Walk through the historic Caelian Hill toward the Basilica of Saints John and Paul.

Discover the hidden layers of Rome on a fascinating 3-hour journey through the Basilica of San Clemente and the remarkable underground complex of the Case Romane del Celio beneath the Basilica of Saints John and Paul. Admire the magnificent medieval mosaics of the upper basilica, descend into an early Christian church filled with ancient frescoes, and explore first-century Roman buildings, including a mysterious Mithraic temple dedicated to Mithras. Continue beneath the Caelian Hill to wander through beautifully preserved Roman houses adorned with vivid wall paintings, offering a rare glimpse into the domestic life and spiritual history of ancient Rome.

Enter the Basilica of San Clemente, one of the most extraordinary archaeological sites in Rome, where nearly two thousand years of history exist in layered form beneath a single church.

From the itinerary

At a glance

What this trip includes

Duration 3 Hours
Tour type Private
Activity level Hard
Accommodation Not included
Transport Not included
Wheelchair access No
City Rome
Languages English, French, Italian, Spanish

Day by day

The itinerary

1
Day 01

San Clemente and the Roman Houses of the Caelian Hill

Visit the Basilica of San Clemente

  • Begin the journey near the Colosseum and walk along the historic route that leads toward the Basilica of Saint John Lateran.

  • Enter the Basilica of San Clemente, one of the most extraordinary archaeological sites in Rome, where nearly two thousand years of history exist in layered form beneath a single church.

  • Learn the story of Pope Clement I, the third successor of Saint Peter, to whom the basilica is dedicated.

  • Observe the peaceful courtyard before stepping inside the upper basilica.

Explore the Upper Basilica

  • Admire the magnificent 12th-century apse mosaic known as the Tree of Life, a radiant composition filled with biblical symbolism, animals, saints, and flowing vines representing the triumph of Christianity.

  • Examine the Cosmatesque marble floor and the elegant 13th-century tabernacle, which reflect the refined artistic traditions of medieval Rome.

  • Enter the Chapel of Saint Catherine and admire the Renaissance fresco cycle created by Masolino da Panicale.

  • Observe architectural elements later refined during the Baroque period by Carlo Fontana.

Descend into the Paleo-Christian Basilica

  • Move to the lower archaeological level to discover the earlier 4th-century basilica buried beneath the present church.

  • Walk among ancient columns and architectural remains that once formed a large early Christian place of worship.

  • Observe remarkable frescoes dating from the 8th century, including the famous Miracle of Saint Clement scene, which contains one of the earliest written examples of the Italian vernacular language.

  • Understand how the medieval basilica above was constructed after the earlier church was buried and reinforced.

Explore the Roman Level and the Mithraeum

  • Continue deeper underground to reach the remains of first-century Roman structures.

  • Walk through the remains of Roman buildings believed to include sections of the Imperial Mint and a residential complex.

  • Enter the mysterious underground temple dedicated to Mithras and learn about the secret rituals practiced by followers of the Mithraic cult.

  • Observe the narrow Roman street that once separated these structures before they were sealed to support the basilica above.

Walk to the Caelian Hill

  • Leave San Clemente and walk through the historic streets of the Caelian Hill, one of the traditional seven hills of Rome.

  • Enjoy a pleasant walk toward the nearby church that preserves another hidden archaeological treasure.

Discover the Roman Houses beneath the Basilica of Saints John and Paul

  • Enter the underground complex known as the Case Romane del Celio, one of the most remarkably preserved residential areas of ancient Rome.

  • Explore interconnected rooms that once formed both a plebeian residence and an elegant Roman domus, complete with private spaces and decorative halls.

  • Admire the exceptional wall paintings from the 3rd and 4th centuries that depict mythological scenes, ornamental motifs, and early Christian symbolism.

  • Learn about the tradition that associates this site with the martyrdom of Saints John and Paul in 362 AD.

  • Conclude the visit with a deeper understanding of how Roman domestic life, aristocratic estates, and early Christian worship evolved within the same urban environment across centuries.

The route

Where you'll travel

Tour route map
Round trip from Piazza di S. Clemente 1 city · 3 Hours

The fine print

Trip details

What's Included

  • 3-hour guided tour
  • Entrance fee

Logistics

Meeting & route

Meeting point
Basilica dei Santi Giovanni e Paolo, Piazza Dei SS. Giovanni e Paolo, Roma, RM, Italia
Tour start
Piazza di S. Clemente, 00184 Roma RM, Italy
Tour ends at the same location as the start point.
End of the journey

Your 3 hours finish where they began, in Piazza di S. Clemente.

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