Palermo Cathedral this month.
We really just wanted to give you more information - hopefully not to the point of being boring. But in this case there's a lot to tell. Sicily's largest church was built on the foundations of a Byzantine structure during the 12th century. That structure, which was a mosque for over two centuries, had in turn been constructed on the site of a Roman temple. Even earlier, before 400 BC (BCE), a Carthaginian temple may have stood there until the Romans took control of western Sicily - not that there were always great differences between Punic divinities and Roman ones.
So the site has been a place of worship - of one kind or another - for two thousand years.