Set just north of Sicily in the Tyrrhenian Sea, the 12.6 kilometre island of Stromboli presents a unique natural wonder: one of the world’s only constantly erupting volcanoes. Spewing lava into the sky and sending trails into the sea every 20 minutes for the last millennia, this magnificent attraction draws adventurous travellers to the island’s shore for the chance to take a guided, strict-protocol hike up to the crater, or watch the glowing streams light up the Slope of Fire at night. The island offers plenty more to experience, too: black pebbled and sandy beaches; wonderful opportunities for scuba-diving, canoeing and stand-up-paddleboarding; and the relatively untouched fishing village of Ginostra, reached by boat and filled with Eolian architecture and gardens. Classic film lovers may enjoy a visit to The Red House, where Ingrid Bergman and Roberto Rossellini conducted their affair.