Seoul Station

Serving roughly 300,000 commuters each day Seoul Station can be a bit overwhelming but don't fret. Signage and English help desks are never too far. Services to both of Seoul's airports run from here as do a plethora or local trains as well. Additionally, Korea's KTX Trains can rocket you from Seoul to Busan (Northern port city, and Korea's second largest city) in about 3 hours, traveling at speeds over 180mph.