From Seoul, take the KTX to Gwangju Songjeong Station, about an hour and 45 minutes, then transfer to a local train or intercity bus to Boseong, another hour to an hour and a half. A direct intercity bus from Seoul's Express Bus Terminal also runs straight to Boseong, taking just under 5 hours. From Gwangju, it's a much shorter hop: about an hour and a half by bus. Once you're at Boseong's bus terminal or train station, local buses (routes 70, 71-6, and 72 all pass by) or a short taxi ride will get you to the tea fields themselves.