The interior didn't survive unscathed. The design of the upper walls was "fixed" during the renaissance, with one small section now restored to something more like its original design (based on paintings of the original, see top right of photo): https://userscontent2.emaze.com/images/9fd064fa-8fb9-409b-ac...

Additionally, Pope Urban VIII had the bronze ceiling of the portico melted down to make cannons in the 1600's.

On the left side of the portico, you'll also notice that some of the columns don't match. If I'm remembering right, these were taken from a nearby Roman bath complex to repair earthquake damage to the portico. https://upload.wikimedia.org/wikipedia/commons/3/35/Pantheon...

All that said, it's still in remarkably good condition for being close to 2000 years old.

Of course nothing survived unscathed but if I recall correctly the Pantheon's marble interior/floor is still mostly original.

The Catholic Popes melted down anything they could find to create Christian things.

As the saying goes, "What the barbarians did not do the Barberinis did"

(in reference to Pope Urban VIII's family name, Barberini)

Just, saying, the Parthenon is not a Roman temple :)

Yeah, the Parthenon is Greek, but the Pantheon, under discussion here, is Roman.

Pantheon is in Rome and is a Roman Temple. Just sayin, saw it with my own eyes. Never been to Greece.

https://en.m.wikipedia.org/wiki/Pantheon,_Rome

https://m.imgur.com/a/cFOq7