Jeju-do Korea’s largest island, has long been the country’s favorite domestic holiday destination thanks to its beautiful beaches, lush countryside and seaside hotels designed for rest and relaxation. There’s plenty on Jeju-do to appeal to those who prefer to be active. Hike up South Korea’s highest mountain, Hallasan, or climb the incredible tuff cone Seongsan Ilchulbong, rising straight from the sea, to watch the sun rise from the ridge of a crater. For a less-demanding nature experience, meander along one of the Jeju Olle Trails and explore tangerine-trimmed country roads, jagged coasts and narrow lanes dotted with cottage-style homes made from black lava rock. The ocean is never far away, so plunge into blue seas to view coral as colorful as the sunsets and dig into Jeju-do’s unique cuisine, including seafood caught by haeneyo (female free divers).