Rome's Colosseum on fire as part of art installation
20 September 2010 Last updated at 10:10 BST
A giant video installation at Rome's Colosseum was used to create the impression that the ancient ampitheatre was on fire.
The installation was designed to shock people into taking better care of their cultural heritage. Organisers said that at least 100,000 people observed the illusion.
Stephanie Holmes reports.