The large opening in the center of the Pantheon’s dome (the oculus) is the only source of light for the building, which means the building has been open to the elements for two millenia . It is the best preserved of all Ancient Roman buildings. It was commissioned by Marcus Agrippa as a temple to all the gods of Ancient Rome. The original Pantheon was destroyed along with other buildings in a huge fire in 80 AD. Domitian rebuilt the temple and it burned again in 110 AD. Not long after the second fire, construction started again, and it was rebuilt by Emperor Hadrian in about 126 AD. This Pantheon has stood ever since. Almost two thousand years after it was built, the Pantheon’s dome is still the world’s largest unreinforced concrete dome. The height to the oculus and the diameter of the interior circle are the same at 142 feet.
Posted by: danielfee | December 1, 2013