Former Plas Power Colliery Western Winding Engine House

The former Plas Power Colliery Western Winding Engine House is a red brick structure featuring a hipped roof, measuring four bays long and two bays wide. It has tall, round-headed windows with brick arches and stone sills, although most window frames are missing, with only a few fragments remaining. These fragments indicate that the windows originally had small-paned metal frames with radially and concentrically glazed fanlights. On the north elevation, there are two large and two small openings that relate to winding cables and the engine man's viewing lines. The building also has a continuous deeply corbelled eaves cornice.

The timber roof, which is missing slates, includes a small dormer on the north slope for the winding cable to pass through, along with additional low dormers for ventilation on other sides. Inside, the large stone engine bases rise to the main floor level, surrounded by pits and a semi-basement. Several large timber beams are positioned across the engine beds.