This castle was really cool. There was a contemporary art thing but it was not the reason to go visit. The reason to go visit is the 360 degree view of the city of Naples. It is marvelous, from the water to the old city to the rolling hills. It is hot up at the top so be sure to wear sunscreen. Fun trick; if you but your head in the battlements there is a strong and pleasant breeze that cools you off in the hot Neapolitan sun.