Nami Island is a crescent-shaped patch of land floating in the Bukhangang (North Han River), just outside Chuncheon in Gangwon-do. It used to be a quiet little sandbar until 2002, when it became the filming location for the K-drama Winter Sonata — and everything changed overnight. Fans from Japan and across Asia started showing up in droves, and the island still pulls a noticeably international crowd today. It's about an hour from Seoul, making it an easy day trip.
The island's signature feature is hands-down the Metasequoia tree lane — rows of towering, arrow-straight trees lining a path that people genuinely fly in just to walk. Push a little further and you'll hit the pine tree lane, which is quieter and shadier than the main drag and makes for a more relaxed stroll. Renting a bike to loop the island is popular too, and don't be surprised if a free-roaming ostrich or peacock casually crosses your path.
What makes Nami Island genuinely fun is its 'Naminara Republic' bit — the island brands itself as its own micro-nation, calling your entry ticket a 'visa' and even printing its own currency and stamps. It's a playful gimmick, but it's committed enough that both kids and adults end up buying into it. A general admission visa runs in the low tens of thousands of won, and it covers most of the walking paths, exhibits, and performances on the island.
There are two ways in: a ferry from Gapyeong Wharf takes just 5–6 minutes, or if you want a bigger thrill, you can zipline straight onto the island. From Seoul, hop the ITX-Cheongchun train to Gapyeong Station, then catch the shuttle bus the rest of the way. The island wears a totally different face each season — cherry blossoms in spring, blazing foliage in fall, snow-dusted trees in winter — so there's really no wrong time to go.