Another thing that fascinated me was all the really old, original (at least they looked original) doors everywhere. I'm not sure if you can see it well here, but the second photo might have the best examples.
Most of the city center was built up on cliffs like this.
This next shot is the view from up in the old garden area where the knights used to exercise.
I also loved all the old cobblestones that were everywhere we went throughout most of our whole trip.
Next stop: Pompeii and Amalfi Coast, Italy