I visited this WHS in June 2012. I never actually stopped to visit the Palladian villas when I used to live in nearby Verona, so this year I wanted to make up for it. I was greatly rewarded as most of the Palladian villas are really well preserved and looked after. The best one to visit IMO is the Rotunda although the entrance ticket is quite expensive. The historic centre of Vicenza has a lot of Palladio works to offer too. Well worth a visit is the 3-D Teatro Olimpico with a sound and light show taking place every hour.