San Callisto catacomb:
Noteworthy are several 3rd, 7th and 8th centuries frescoes.
It’s renowed for the Crypt of the Popes. The tomb of St. Cecilia was in one of the cubicles before the sarcophagus of the saint was removed in the 9th century to the church bearing her name.
A large park surround this catacomb: by the entrance is the Domine quo Vadis church, at the end the church of St Sebastian and the old Appian Way.