The world's most popular plane journey, from Seoul to Jeju (the capital of Jejudo island in South Korea), takes just under an hour. You can buy tickets for around £120 each way.
According to the Republic of Korea's official Flickr page, Jejudo is "a special self-governing province ... the only special autonomous province of Korea, situated on and coterminous with the country's largest island."
This means the island retains a level of autonomy — hence why almost every country in the world is allowed a temporary visit, visa-free.
In 2011, Jeju was named one of the New 7 Wonders of Nature.
Its defining physical characteristic is certainly the Hallasan volcano. At 1,950 metres, it's South Korea's highest peak.
The crater lake atop Hellasan is named 'Baengnokdam,' meaning 'white deer lake.' Legend has it that wizards descended from heaven to play with the white deer that drank there.
Thanks to the island's volcanic origins, its core is interspersed with weaving tubes formed by ancient lava, which can now be accessed as an excursion.
Jejudo island is home to Haenyo mermaids — freedivers that risk life and limb to catch oysters and other creatures lurking on the sea bed. The so-called 'sea women' hold their breath for two minutes, diving to depths of 65 metres with no equipment.
It's also the site of a bizarre theme park named 'Love Land." The park runs sex education films and features 140 sculptures representing humans in various sexual positions.
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