What is the third largest train station in South Korea? 

At Daejeon Station on the Gyeongbu Line, the Korea Railroad Corporation headquarters building and
This is the headquarters building of the National Railroad Authority.
Also known as Twin Towers.
Admire the magnificent sights of Daejeon Station and the Korea Railroad Corporation Twin Buildings.
0:19 Gyeongbu Line Daejeon Station
0:37 Korea Railroad Corporation
1:02 Daejeon Station waiting room
1:27 Daejeon Urban Railway Daejeon Subway
1:57 Daejeon Station Underground Shopping Mall
2:25 Daejeon Station Traditional Market
3:25 Gyeongbu Line Jitan Station platform