A 69-year-old Japanese tourist died after the perimeter wall of the Pantheon in Rome collapsed, local media reports.
Morimasa Hibino is said to have fallen from a height of about seven meters (22.9 ft) at around 21:50 local time (19:50 GMT). A priest called the police when he saw the man lying in the ditch, according to local newspaper La Repubblica.
Emergency services and firefighters reportedly had to force open a gate outside the ancient Roman Temple, before the man was found dead in a ditch.
An investigation aimed at determining the cause of death.
The man was sitting on the edge of the wall, lost his balance and fell, reported La Republlica, citing the police.
Investigators obtained surveillance images and video footage of the area where the man was sitting, local media reports.
The Pantheon is one of the most visited attractions in Italy, with millions of tourists estimated to see it each year.