The Pantheon as it stands is a result of a third reconstruction: the first time, Agrippa's Pantheon burned down in 80 AD. When Domitian rebuilt it, it was gutted by a fire again in 110 AD. Emperor Hadrian's Pantheon is what we see today, after its third resurrection.
12 Fascinating Facts About the Rome Pantheon That Will Amaze You
12 interesting Rome Pantheon facts

1. Third time's the charm


3. The Pantheon once had bell towers



6. Dome's diameter is proportional to the height

7. Oculus is the only source of natural light

8. Rain water enters through the Pantheon oculus

9. Uniquely intact bronze doors

10. Central Corinthian column is known as the 'Pillar of Woes'

11. Final resting place of notable figures



