The area around Lecara Friddi is great. don't forget to visit 'Valley of the temples' near Agrigento. NOTE, They (the temples) are on TOP of the hill, I spent ages looking down into the valleys.
If you have a head for heights visit Alto Fonte. The houses on the approach are nailed with 20 foot long nails into the cliff face hundreds of feet up.
When you enter into the main town you do so through what looks to be someones front door which you get at by riding over the roof of one of the nailed to the cliff houses. Please post photos, I was too scared to take any