Viale del Monte Oppio, 28
Hours: 7:00am to noon; 4:00 to 7:00pm. Sunday 4:00 to 7:00pm
The titulus is still visible under the church and it’s a rare example of a 3rd-century domestic Christian church. It was rebuilt in the 9th century utilizing some antique columns, and radically altered in the 17th century.
The crypt contains relics of the martyrs. On the outside wall of the church are ruins from the Baths of Trajan into which the church was built.