Kitchen garden walls, gatepiers and gates at Gwernyfed High School

The kitchen garden walls, gatepiers, and gates at Gwernyfed High School date from around 1880 and were designed by W E Nesfield to enclose the kitchen gardens of Gwernyfed Park. The garden is roughly square in shape and opens into another square walled garden to the southeast. The walls are made of rubble stone, 55 centimeters thick and 3 meters high, with external buttresses on each side and angle buttresses at the corners. The offsets are tiled, and the inner face of the wall is lined with heat-retaining brick, as recommended by Loudon. The top of the wall features tiled coping set on two brick offset courses.

There are axial entrances on the east and west sides, marked by tall gatepiers made of ashlar limestone. The piers have alternating larger courses and inset angles, topped with moulded cornices that include egg and dart moulding. The eastern entrance has a wrought iron frame and overthrow adorned with decorative crestings, along with a pair of decorative wrought iron gates. The ironwork on the western gatepiers is missing.

The eastern wall extends from the gatepiers to the junction with the smaller walled garden, where there is a small garden store made of coped rock-faced stone featuring a stone mullioned window. The western wall continues for 7 meters south of the western gatepiers before transitioning to a low modern wall. On the northern side of the garden, the wall rises to 61 courses, approximately 4.6 meters, serving as the back wall for the glasshouses.

The southern enclosing wall is connected to the Gardener's Cottage.