![The Pantheon of Rome, world's largest unreinforced concrete dome (142 ft), with 1900 years. Each 21 of April, the rays of the sun pass through the oculus illuminating the main gate; built The Pantheon of Rome, world's largest unreinforced concrete dome (142 ft), with 1900 years. Each 21 of April, the rays of the sun pass through the oculus illuminating the main gate; built](https://i.redd.it/e3on1yowhybb1.jpg)
The Pantheon of Rome, world's largest unreinforced concrete dome (142 ft), with 1900 years. Each 21 of April, the rays of the sun pass through the oculus illuminating the main gate; built
![Dome Oculus Pantheon, Rome, Italy. Rebuilt by Hadrian in 118 to 125 AD Became oldest Roman church in 609 AD. Oculus, hole, provides only light Stock Photo - Alamy Dome Oculus Pantheon, Rome, Italy. Rebuilt by Hadrian in 118 to 125 AD Became oldest Roman church in 609 AD. Oculus, hole, provides only light Stock Photo - Alamy](https://c8.alamy.com/comp/2GJ86K0/dome-oculus-pantheon-rome-italy-rebuilt-by-hadrian-in-118-to-125-ad-became-oldest-roman-church-in-609-ad-oculus-hole-provides-only-light-2GJ86K0.jpg)
Dome Oculus Pantheon, Rome, Italy. Rebuilt by Hadrian in 118 to 125 AD Became oldest Roman church in 609 AD. Oculus, hole, provides only light Stock Photo - Alamy
![The Pantheon dome with its oculus, Rome Wall Art, Canvas Prints, Framed Prints, Wall Peels | Great Big Canvas The Pantheon dome with its oculus, Rome Wall Art, Canvas Prints, Framed Prints, Wall Peels | Great Big Canvas](https://static.greatbigcanvas.com/images/singlecanvas_thick_none/trigger-image/the-pantheon-dome-with-its-oculus-rome,1936329.jpg?max=800)