Catacombs
Nobles of the 17th and 18th centuries in this area opted to have their corpses mummified. You can visit the somewhat creepy crypt, located beneath a 17th-century Capuchin monastery, to see their preserved remains and handwoven silk garments. The catacombs are usually open daily from April to October and on weekends the rest of the year, but it's advised to call ahead to be sure that someone is actually on-site to let you in.