There are many places in Sicily where you feel like you've somehow ended up in Greece; Agrigento is one of those places. The valley complex has several well-preserved temples and the ruins of others that were among the biggest ever built, but I couldn't help but be somewhat disappointed. I was more impressed by the temples and acropolis of Selinunte (just up the coast to the west)which gave a much better insight into life in a 5th century BC Greek colony. Still, Agrigento is a very important archaeological site and well worth a visit for the day. I highly recommend the drive from Palermo; some of the landscape is just gorgeous.