Today at the Church S. Maria ad Martyres, otherwise known as the Pantheon, an annual event much beloved of the Romans took place. At the end today’s Pentecost Mass red rose petals were let to fall in great abundance through the oculus or "eye" of the dome, which is open to the sky. The dome is actually a foot wider than the cupola of St. Peter’s Basilica. At the end of Mass fireman from Rome’s fire department did the honors and let fall the petals.
Here are some photos of the event. Various folks were tricked out.