The basilica, dedicated to pope Clement I, is not one of the most impressive churches of Roma at a first glance of its interior. What makes this Basilica of San Clemente special is that multiple church buildings were built on top of each other over the centuries. During your visit, you will have the opportunity to get to know the history of the church through excavations of a 4th-century church, a secret church from the 1st century and Roman foundations.