Yongsan

Yongsan station is a major railway station in Seoul, South Korea. It is located in Yongsan District, and adjoins the Yongsan Electronics Market. The station is the terminus for high-speed and long-distance trains on a number of railway lines, including most trains on the Honam Line, its high-speed counterpart, and all trains on the Janghang and Jeolla Lines.

Prior to 2004, all long-distance trains serving Seoul terminated at the nearby Seoul Station, but with the opening of the Korea Train Express, Yongsan Station took over some of Seoul's services.

Source: Wikipedia