The history of the palace goes back to the 9th century during the time of Arab rule, but probably goes back even further. Today it is the seat of Sicily's semi-autonomous regional government.
YOU CAN WATCH THIS PRESENTATION IN MUSIC HERE: http://www.authorstream.com/Presentation/sandamichaela-1249933-palermo5/
(You have the link on the first slide)
Clipping is a handy way to collect important slides you want to go back to later.