The Pantheon was originally built in 27 BCE as a temple honoring all gods, with the name coming from the Greek words for "all" and "god." It was rebuilt in 126 CE under Emperor Hadrian and has a circular structure under a dome opening to the sky, making it the world's largest unreinforced concrete dome nearly 2,000 years later. It was later converted to a church in the 7th century CE and remains one of the best preserved buildings from ancient Rome.

1. The Pantheon

2. Pantheon or ΠΑΝΘΕΟΝ
• comes from 2 Greek words
– παν = all
– θεος = god
• temple to all the gods

3. -originally built by Marcus
Agrippa in 27 B.C.E.
-rebuilt by the Emperor
Hadrian in 126 C.E.

6. -M·AGRIPPA·L·F·COS·TERTIVM·FECIT
-standing for Latin: Marcus Agrippa, Lucii filius, consul
tertium fecit
-Marcus Agrippa, son of Lucius, Consul for the third
time, built this

7. -converted to a church dedicated to St. Mary and the Martyrs
in the 7th century C.E.

9. South east view
of the
Pantheon from
Piazza della
Minerva

14. The building is circular with a
portico of huge granite
columns under a pediment
opening into the rotunda
A rotunda (from Latin
rotundus) is any building
with a circular ground
plan, often covered by a
dome

16. Under the
Portico of the
Pantheon

17. The rotunda is under a coffered, concrete dome, with a
central opening (oculus) to the sky. Almost two
thousand years after it was built, the Pantheon's dome
is still the world's largest unreinforced concrete dome.
Oculus

18. oculus

19. oculus