Very impressive castle that is only open late morning to early afternoon so plan around your visit to the Dali museum (which is why you're in town) accordingly. It's the largest fortress in Europe, a relic of the Thirty Year's War. State of the art war technology for the 18th century it is fascinating inside and out. You can hike all the way around and work off some of the Catalan cuisine you've been building up over your trip, but even an inside tour of the museum involves a lot of walking. Their website is very informative: https://castellsantferran.com/en/historic-summary read more