Santa Restituta is a church in Naples, southern Italy, dedicated to Saint Restituta. The foundation of the basilica is attributed to the Emperor Constantine the Great in the 4th century and is mentioned in a passage from the life of Pope Sylvester I in the Liber pontificalis:
" at that time, the emperor Constantine built a basilica in the city of Naples."
The basilica is most likely located on the site previously occupied by an ancient temple of Apollo.It is the original palaeo-Christian church on the site where the Cathedral of Naples now stands, and was rebuilt and incorporated into the cathedral when it built in the 13th century.
Wikipedia https://en.wikipedia.org/wiki/Santa_Restituta
Address 145 Via Duomo, Napoli 80138, Italy
Coordinates 40°51'10.291" N 14°15'33.749" E