Vernazza is one of the 5 centuries-old villages that make up the Cinque Terre, on northwest Italy’s rugged Ligurian coast. Colorful houses surround its small marina. The Santa Margherita di Antiochia Church has a bell tower topped by an elegant cupola. Clinging to the rocks, Doria Castle is a medieval defensive structure with a cylindrical tower. The Belforte bastion is just below it.