The sanctuary of St. Paul, also known as the Church of St. Paul "alla rotonda", is located in Via Reggio Campi near the square Circle, in a position that Gaze over the southern part of the city.
The facade is in Romanesque style, with three bronze portals and at the top there are nine niches with mosaics, divided into three groups. In the churchyard there is a statue of St. Paul, inside the church there are 500 m² of mosaics, in part work of Nunzio Bava.
The baptismal font is by Nicola Berti, who also designed the two angels and the four panels dedicated to St. Paul. Adjacent to the church there is the Museum St. Paolo, with an art gallery and a vast collection of sacred objects.