I revisited St. Peter's Basilica to get some better photos today. The light was a bit dark previously. Here is a view from the dome looking down into the church. The highlight of the trip! The brown object at the bottom is the top of the baldachin directly beneath the dome of the basilica. Underneath the baldachin is the entry to St. Peter's tomb and the grottoes. This scene was used in Dan Brown's Angels & Demons, though the movie scene itself was digitally recreated with a full 360 degree green screen.
Here is the sculpted bronze canopy, or ciborium (baldachin) covering the high altar.
The grottoes hidden under St. Peter's Basilica. This is the only section open to the public without special permission.