Cardiff Bay Station

Cardiff Bay Station is a 19th-century building featuring stuccoed walls and a hipped slate roof with deeply overhanging eaves. It has tall stuccoed chimneys with classicising cornices; the two northernmost chimneys are positioned at right angles to the road, while the others run parallel. The Bute Street facade is divided into two sections. The northern section has three storeys and four bays, with banding and pilaster strips providing articulation. The second floor contains four almost square windows set close to the eaves, with the central pair grouped more closely together. The first-floor windows are set deeply and have panelled aprons below, with a band course that runs around the building at this level. On the ground floor, the windows align with those above and feature stone sills, although the northernmost window is round-headed. To the left of this window is a round-headed doorway with an architrave and keystone. The southern section of the facade has a group of three large, tall windows with small pane sashes, featuring a moulded architrave supported on brackets and a bracketed cornice above. The ground floor here has three windows grouped together, with the central window blocked and the right window lacking an architrave, indicating it may have been a blocked doorway. To the left of these windows is another round-headed doorway similar to the one at the northern end of the facade.

The southern elevation features a two-storey semi-hexagonal bay with a pierced parapet above, with each face of the bay having a window on each floor, each surrounded by a moulded architrave on small brackets.

The western elevation has been somewhat altered and is obscured by a modern station canopy, but it follows the pattern of the eastern facade, omitting the large boardroom windows. The station platform features free-standing cast iron columns in the Italian Renaissance style, which have likely been relocated. The northern elevation has doubled pilaster strips at the ends, but the door and window openings have been altered for a fire escape. The ground floor has been modified for use as a Railway Museum.