Enjoy a half-day walking tour of Christian Rome and discover underground treasures in some of the most sensational churches. Your guide will tell your fascinating facts along the way, leading you to the ancient Basilica of San Clemente, and the Cathedral of St. John in the Lateran Palace. Start at the Basilica of San Clemente, the only church in Rome to be built on 3 different levels. Constructed from the 1st to the 12th centuries, 2 underground floors can now be explored, including the Altar of Mithras from the 1st century.
The photo is courtesy of Viator.com