The building consists of the relocated and refurbished Grade II listed “D” Shed,[2] previously an industrial warehouse located next to Bute East Dock.
It has wholly cast cruciform columns and the eaves beams have been constructed out of simple available riveted sections.
The roof truss design includes a bent bottom member and cast iron stays.
Iron frame construction of 5 bays by 2, with cruciform-sectioned Tuscan-style columns supporting I-beam entablature.
Roof of iron construction with closely-spaced trusses; system of narrow tie bars with v-shaped cast-iron stays bolted to rafters.
Listed for special interest of C19 section of building, a rare example in Wales of a mid C19 iron framed dock warehouse/transit shed.