The Triumphal Arch at Santa Maria Maggiore: Left side
Basilica of Santa Maria Maggiore
Top register: The Annunciation and Joseph's Dream
Second register: The Adoration of the Magi
Third register: The Slaughter of the Innocents
Bottom register: The Apostles as sheep at the gate of Jerusalem
This image in full resolution
Photographed at the basilica by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.