The Pantheon (Of all the gods) | Santa Maria ad Martyres (St. Mary and the Martyrs) | Built in 126 AD | Piazza della Rotonda (click for google map)
- The Pantheon’s dome is the world’s largest unreinforced concrete dome.
- The height to the oculus and the diameter of the interior circle are exactly the same (142 ft), which means that a 142 ft sphere could fit inside the Pantheon.
- The oculus is 27 feet wide
- The Italian Renaissance painter Raphael is buried in the Pantheon