Train Shed at Holyhead Station

The train shed at Holyhead Station is a long, curving structure approximately 300 meters in length, built from red brick with a stone cornice and dressings, featuring string courses made of moulded yellow brick. The roof is covered in modern opaque and translucent corrugated materials and includes a long ridge lantern. The east side of the shed has a series of elliptical arches arranged in 18 bays, articulated by pilasters, with each bay featuring a broader central arch flanked by narrower arches. Four of these groups provide access, while others have openings only in lunettes for ventilation. Some alterations have been made to the arches at the south end.

At the narrower northeast end of the shed, there are three bays of three arches in the same style, with a modern brick gable end. The west side of the shed was originally open to the quay, with the roof supported by iron columns on octagonal plinths; however, many of these columns are now encased in mid-20th century brick service buildings, such as buffets. Towards the southwest end, 14 arches from the wall of a former hotel remain in place, supporting the roof. This section is made of red brick with stone dressings on a stone plinth, featuring four groups of three segmentally arched windows with white glazed bricks on the jambs and buff ceramic patent stone for the heads and keystones. Between the first two window groups, there is a large doorway in the same style, along with a smaller doorway in the center. Some openings have been blocked with modern red brick.

The roof is of the Euston type, with the west side supported on cast iron brackets that feature fretted leaf decorations, springing from the columns and lattice girders. Similar brackets once supported a lost canopy over the quayside. The east side of the roof rests on the wall and the shed. The roof trusses consist of a framework of wrought iron tie bars, either round or T-section. The central section, which houses the ridge ventilator, has round-sectioned cross bars and tensioners, along with further cast iron brackets with leaf patterns used as ridge pieces. The platforms have been modernized with concrete and feature concrete or tarmac surfaces.