Introduction
As early as A.D. 200, the burial place of the great Apostle in the Via Ostia was marked by a cella memoriæ, near which the Catacomb of Comodilla was established. Constantine, according to the "Liber Pontificalis", transformed it into basilica; in 386 Theodosius began the erection of a much larger and more beautiful basilica, but the work including the mosaics was not completed till the pontificate of St. Leo the Great.
Click on a link to the Vatican website beginning a virtual tour.
| 1. | Courtyard | |
| 2. | Central Nave | |
| 3. | Tomb | |
| 4. | Apse | |
| 5. | Transcept 1 | |
| 6. | Transcept 2 | |
| 7. | Baptistery | |
| 8. | Cloister | |
| 9. | Museum |
