Gupo

Ok, a little convenient,there is a metro across the road

Fairly standard station. One side (with the ramp) is the KTX station. The other side (with the elevator) is the metro station. Couple of shops, toilets, and a seating area, accessible by the local bus service too.

Excellent information!

Train station. You can go to Seoul, Busan and so on by train from here. There are 3 train stations for the Seoul to Busan line in Busan. It is one of them. There are some KTX train you cannot take here. So be cautious. Gupo subway station is near it. 구포 기차역.

It takes 30-60 minutes from Busan Station to Gupo Station