An article at Lacus Curtius on the temple of Sol Invictus in Rome contains the following interesting statement:
The last reference to it in antiquity is in the sixth century (Anon. de Antiq. Cpl. IV.66, ed. Banduri) when eight of the porphyry columns were sent to Constantinople for the church of S. Sophia…
These abbreviated references in older literature can be a bit of a pain. Who can guess precisely what “de Antiq. Cpl.” is?
Some Google searching reveals that it is Imperium Orientale sive Antiquitates Constantinopolitanae, edited by Anselmo Banduri and published in Paris in 1711. A copy is being sold at auction somewhere for doubtless significant money. A google book search reveals evidence of the book’s existence, but sadly no copies. I would have liked to see what the text actually said.
But a further search for a title of “imperium orientale” did bring up some interesting things:
Constantine Porphyrogenitus, De thematibus (1588): http://books.google.com/books?id=XeYPAAAAQAAJ, from the BNF in Paris.
Another copy: http://books.google.com/books?id=sB0PAAAAQAAJ
And a Kessinger reprint of it: http://books.google.com/books?id=TgY4QAAACAAJ
So not entirely wasted effort; but I would like to see all the data on the Temple of Sol Invictus tabulated, pictures of whatever remained at the renaissance — so much was destroyed during this period! — all on one web page.
It is remarkable how little Google images gives us, if you search for pictures online of classical topics. The same few scanty images of Mithras represent the vast body of sculpture; likewise with Sol. Someone ought to go down to a museum with a camera and just mass upload images! (Although I notice that if you add them to Picasa, Google images does not pick them up!)