Churches & Religious Sites — Roma

An entirely ordinary-looking basilica on the surface, hiding two almost never-visited layers of Roman history right beneath it: a 4th-century church and a temple of Mithras.

One of Rome's four papal major basilicas, famous for its 5th-century early-Christian mosaics lining the triumphal arch.

A former Roman temple, now a Catholic basilica, renowned for its magnificent concrete dome.

The largest church in Christendom and heart of Vatican City, crowned by Michelangelo's dome and framed by Bernini's colonnade.