Rome: San Clemente Underground and Basilica

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Descend 100 feet at the underground San Clemente archeological site and uncover 2,000 years of history. Go above ground to explore the famous gold mosaics of the 12th century Basilica of San Clemente.

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  • Visit the underground archeologic site of San Clemente Basilica
  • Delight at the sparkling gold mosaics of the Basilica of San Clemente
  • Descend into the deepest levels to discover an ancient Mithraic temple


Just a stone's throw from the Colosseum, you will find one of Rome's hidden gems, the 12th-century Basilica and the archeological site of San Clemente. Visit this incredible place and navigate three underground levels which uncover over 2,000 years of history. The Basilica reveals a sparkling gold mosaic in the central nave. What lies beneath the Basilica remained a secret until 1860 when a flood led an Irish Dominican Roman Catholic priest and archaeologist to discover the levels beneath.  Today, the excavations are still not complete but you can descend 100 feet underground. At the first level is a 4th-century Basilica, which was long forgotten after the construction of the 12th-century Basilica above. Further down are the remains of an ancient pagan Mithraic temple, complete with an altar. Past the temple are the ruins of ancient Roman homes. All of this is incredibly preserved and was painstakingly excavated. At the lowest level, discover the underground spring which caused the chaos that led to the underground discovery. 


Entrance fee to San Clement Basilica Expert English-speaking tour guide

Important Information

  • You must be able to climb and descend stairs on your own
  • There is a maximum number of 15 people per booking
  • It is recommended to wear comfortable shoes for walking on uneven surfaces
  • It is recommended to wear layers because the underground levels may be cooler than the outside temperature
  • Please be at the meeting point at least 15 minutes before the departure time in order to check-in
  • There is a dress code inside of the church that requires that your shoulders and knees be covered

Easy cancellation

Cancel up to 24 hours in advance for a full refund


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