Valve tower at Upper Lliw reservoir with bridge and bridge abutment

Circular valve tower standing a little out from shore, sandstone ashlar with leaded domed roof, classical style. Tower has finely cut channelled rustication with big curved cornice moulding, deep plinth with ogee-moulded top carried around an arched doorway on W side. Three arched windows also in moulded surrounds with stone sills. Below plinth is a big semi-circular or bull-nose base moulding, over channelled stonework continuing underwater. Dome has raised ribs and pierced metal crown around top. Delicate footbridge with shallow arch made of 4 curved cast-iron pieces with open spandrels, each pair meeting in centre, and carrying iron railings with ball finials to posts and horizontal rails. W end of bridge rests on semi-circular abutment with big ring moulding matching that on tower and two quadrant curves of railings.