This early christian church was built in the 5C
but it has undergone many alterations: a campanile was added in
the 10C, the crenellations were removed in the 17C. In the 13C was
built the cloister and the convent. In the 16C, Sixtus V and the
architect Domenico Fontana transformed the interior into a typical
example of the Counter-Reformation style: this, together with subsequent
Baroque addictions, completes the medieval character of this church.