Known as Vestmannaeyjar locally, the Westmann Isles are Iceland’s most important and newest island group, just 5,000 years old and still active volcanically. The latest addition, Surtsey, came courtesy of an undersea eruption in 1963. Because of their youth, the islands are especially rugged and are renowned for their sheer cliffs, which serve as home to huge bird populations (10 million puffins alone live here). As for people, Heimaey is the only island in the cluster that’s inhabited.