Known as the “Hawaii of Korea” thanks to its extraordinary volcanic landscapes, the island of Jeju has been designated a UNESCO Global Geopark comprising multiple natural phenomena. Hallasan National Park is home to South Korea's tallest mountain, a luminescent crater lake and cascading waterfalls along its hiking paths. The astounding multicolored caverns of Geomunoreum are regarded as the finest lava tube system in the world, and the fortress-like volcano of Seongsan Ilchulbong rises dramatically out of the ocean. To discover the island’s human heritage, visit the Haenyeo Museum and learn about women who have been free-diving for seafood without modern equipment for hundreds of years, or stop at a folk village where thatched-roof houses and other artifacts tell the story of Jeju's traditional culture. For a relaxing pastime, renowned beaches in shades of white, black and red invite you to lounge beside the sea and perhaps savor a hallabong orange, the island’s signature fruit beloved for its sweet and slightly acidic flavor.