Ancient Rome

Right now I'm listening to the history of ancient Rome...

Professor Pafford at the University of Berkeley
Mike Duncan podcast

One building that dates back to the Roman empire and is still intact is the Pantheon...Wikipedia article...
The Pantheon (pronounced /pænˈθiː.ən/ or /ˈpænθi.ən/,[1] Latin: Pantheon,[nb 1] from Greek: Πάνθειον, meaning "Every god") is a building in Rome which was originally built as a temple to all the gods of Ancient Rome, and rebuilt circa 126 AD during Hadrian's reign.

and it is now a church...this video has views of the inside...