On 6-7-8 April, as every year, at 13:00 the extraordinary illuminations of the
Pantheon will be seen: the Arc and the Square of Light.
The Arc of Light perfectly matches the masonry arch above the portal. The Square of Light illuminates the square of the floor, outside of the portal.
These illuminations had
a precise symbolic meaning that we understood thanks to Archeoastronomy.
We explain it in detail in our book
"Pantheon. Architecture & Light", published by Rirella Editrice.