The story of the Pantheon
The Pantheon was rebuilt by Emperor Hadrian around 125 AD, though its façade still carries the name of Agrippa, who built an earlier temple here. Its dome, 43 metres across, is still the largest unreinforced concrete dome in the world.
Light enters through the oculus, a round opening at the top, and moves across the interior during the day. Since the 7th century it has been a church, which helped preserve it. The painter Raphael is buried here.
