San Clemente is an extraordinary attraction, undoubtedly worth visiting. It not just offers a visit to a delightful sanctuary from the twelfth century, yet visitors can also discover a fourth century sanctuary and an old Roman mansion, strolling down dull and muggy passageways. You will first go to the twelfth century Basilica, worked via Cardinal Anastasius. Appreciate the Byzantine Apse mosaic, find out about the Schola Cantorum, and contemplate at the astounding floor mosaics that cover the entire floor. Continue to the underground Basilica from the fourth century and investigate the frescoes portraying the lifes of St. Alexius and St. Clemente while hearing from your guide the history of this antiquated Basilica. Discover the raised area of the clique of Mithras and the Mithraic Schoolroom, and float through a labyrinth of chambers and corridors produced using tufa block. Discover more about the existence of San Clemente, and the structure of the Basilica with of its mosaics, frescoes and covered up corridors. Constructed on the remnants of the previous fourth century structure, this archaic church – apparently a copy of its predecessor – features a stark street-side outside with the eighteenth century ringer pinnacle and classical pediment of the colonnaded Baroque façade just visible over the patio wall.