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The Pantheon in Rome - Know Before You Go

How to Visit the Pantheon - Rome's 2000 year old monument

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Rome The Pantheon
P. Eoche/The Image Bank/Getty Images
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View of the Piazza della Rotonda from the Pantheon

James Martin
pantheon picture

The dome and oculus of the Pantheon during restoration.

James Martin

The Pantheon stands as the most complete Roman structure on earth, having survived 20 centuries of plunder, pillage and invasion.

Facts About the Pantheon

The original Pantheon was a rectangular temple built by Marcus Vipsanius Agrippa, son-in-law of Augustus, the first Roman emperor, as part of a district renewal plan in 27-25 BC. What tourists see as they relax in front in the Piazza della Rotonda is radically different than that original temple. Hadrian rebuilt the structure; maker's stamps in the bricks allow us to peg his restoration between 118 and 125 AD. Still, the inscription on the architrave attributes the construction to Agrippa during his third councilship. The portico in front of the Pantheon is what remains of Agrippa's original temple.

The Pantheon contains the tombs of Rafael and of several Italian Kings. Pantheon is a Greek word meaning "to honor all Gods."

Dimensions of the Pantheon

The giant dome that dominates the interior is 43.30 meters or 142 feet in diameter (for comparison, the White House dome is 96 feet in diameter). The Pantheon stood as the largest dome ever until Brunelleschi's dome at the Florence Cathedral of 1420-36. It's still the largest masonry dome in the world. The Pantheon is made perfectly harmonious by the fact that the distance from the floor to the top of the dome is exactly equal to its diameter. Adytons (shrines recessed into the wall) and coffers (sunken panels) cleverly reduce the weight of the dome, as did a lightweight cement made of pumice used in the upper levels. The dome gets thinner as it approaches the oculus, the hole in the top of the dome used as a light source for the interior. The thickness of the dome at that point is only 1.2 meters.

The oculus is 7.8 meters in diameter. Yes, rain and snow occasionally fall through it, but the floor is slanted and drains cleverly remove the water if it manages to hit the floor. In practice, rain seldom falls inside the dome.

The massive columns supporting the portico weigh 60 tons. Each was 39 feet (11.8 m) tall, five feet (1.5 m) in diameter and made from stone quarried in Egypt. The columns were transported by wooden sledges to the Nile, barged to Alexandria, and put on vessels for a trip across the Mediterranean to the port of Ostia. From there the columns came up the Tiber by barge.

Preservation of the Pantheon

Like many buildings in Rome, the Pantheon was saved from pillage by turning it into a church. Byzantine Emperor Phocas donated the monument to Pope Boniface IV, who turned it into the Chiesa di Santa Maria ad Martyres in 609. Masses are held here on special occasions.

Pantheon Visitor information

The Pantheon is open from 8:30 a.m. to 7:30 p.m. Monday to Saturday, from 9 a.m. to 6 p.m. on Sunday, and 9 a.m. to 1 p.m. on holidays that fall on weekdays except for Christmas Day, New Year's Day and May 1, when it is closed. Admission is free.

How to Experience the Pantheon

The Piazza della Rotonda is a lively square filled with cafes, bars, and restaurants. In summer, visit the Pantheon interior in the day, preferably in early morning before the tourist throngs, but return in the evening; the piazza in front is especially lively on warm summer nights when the Pantheon is lit from below and stands as an enormous reminder of the grandeur of ancient Rome. The penny pinching backpack crowd floods the steps of the fountain surrounding one of Rome's trophy obelisks, while tourists throng to the bars that edge the piazza. Drinks are expensive, as you might expect, but not outrageous, and you can nurse one for a long time without anyone bothering you, one of the simple delights of European life.

The restaurants are mostly mediocre, but the view and atmosphere is unparalleled. To experience good solid Roman food at a good restaurant close by, I recommend Armando al Pantheon, in a small alleyway to the right of the Pantheon as you're facing it. (Salita de' Crescenzi, 31; Tel: (06) 688-03034.) Best coffee at the Tazza d’Oro nearby.

See our Pictures of the Pantheon. See a video explaining the Pantheon.

The Pantheon is one of our top ten free attractions in Rome.

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