The station is situated below road level to the east of Queen Street, where the main entrance is situated centrally in the curved brick building erected in 1933 on the south side of the line. The ticket office is placed in the original 1933 booking hall, which leads via a passageway to the covered footbridge that spans the tracks parallel to Queen Street. Lifts are located near the steps down to the platforms, the first of which leads down to platform 2 which is used by all trains towards St David's but can also handle trains in the opposite direction. At platform level the old Queen Street C signal box built in 1925 and taken out of use in 1970 can still be seen standing at the end of platform 3 between the footbridge and Queen Street. Beyond this the line can be seen dropping steeply at 1 in 37 (2.7%) and curving northwards towards the St David's Tunnel. The level areas alongside this line used to be a goods yard (on the right) and carriage sidings (on the left).