![The 1900-year-old Pantheon which features the world's largest unreinforced concrete dome. At noon on 21 April (traditional date of birth of Rome), the sun's ray through the oculus would strike the entrance The 1900-year-old Pantheon which features the world's largest unreinforced concrete dome. At noon on 21 April (traditional date of birth of Rome), the sun's ray through the oculus would strike the entrance](https://i.redd.it/1wdfe78okjna1.jpg)
The 1900-year-old Pantheon which features the world's largest unreinforced concrete dome. At noon on 21 April (traditional date of birth of Rome), the sun's ray through the oculus would strike the entrance
![The Pantheon is 43 m tall. The diameter of the dome is of 43 meters.... | Download Scientific Diagram The Pantheon is 43 m tall. The diameter of the dome is of 43 meters.... | Download Scientific Diagram](https://www.researchgate.net/publication/325886967/figure/fig3/AS:652248321384452@1532519526506/The-Pantheon-is-43-m-tall-The-diameter-of-the-dome-is-of-43-meters-The-Oculus-has-a.png)
The Pantheon is 43 m tall. The diameter of the dome is of 43 meters.... | Download Scientific Diagram
![Pantheon Roma on Twitter: "9 metres is the diameter of the #oculus.. and when it rains you can #admire a 9 metres "column" of water falling on the floor of this amazing Pantheon Roma on Twitter: "9 metres is the diameter of the #oculus.. and when it rains you can #admire a 9 metres "column" of water falling on the floor of this amazing](https://pbs.twimg.com/media/EV9OI1EWkAMyW6j.jpg)