
There is something real in this legend, which usually refers to tourists by guides, writes the Italian magazine Focus.
The Pantheon in Rome, built in 27 BC by Agrippa and rebuilt by Hadrian (110-125), was originally a pagan place of worship to later become a Christian church and mausoleum of prominent people (kings of Italy Vittorio Emanuel II and Umberto I).

The dome, made of concrete mixed with pumice and pumice stone, rises into increasingly smaller windows that converge toward the center, where the only "window" of the church, called the "oculus" (eye), is about nine meters in diameter. .
When it rains, the opening creates a "chimney effect" which is a rising stream of air that leads to the breaking of water droplets.

Thus, even when it rains outside, the feeling is that less rain falls inside; sensation reinforced by the fact that the central and lateral drainage holes in the floor prevent the formation of puddles.