Gatepiers, gate and garden walls to Machen House

The entrance to Machen House features two sandstone gatepiers that have been tooled, each with a plinth and distinctive cast-iron caps shaped like coved pyramids topped with acorn finials. Curved walls on either side are made of rock-faced coursed squared stone, with alternating long and short end-on stone coping, curving out to matching piers with caps. A single broad timber gate is situated between 20th-century octagonal oak piers. The gate includes a central upright, two diagonal cross panels in the upper half, and dog-bars below with wire inserts in the panels, supported by long strap hinges.

To the west of the entrance, a rubble stone garden wall constructed from purple sandstone features edge-on stone coping and extends to a southwest corner tower made of red sandstone. This tower consists of two walls, south and west, topped with an embattled parapet on small square corbels, and has one pointed opening on each side framed in grey stone with a stone sill. The masonry indicates that the tower was added to an earlier plain low wall. The wall then returns north between Machen House and Nantygarth, featuring a square pier at the center and another corner tower at the northwest angle. This corner tower has one face facing east into the garden and another facing south, integrated with the walls of Nantygarth. Each side has a blocked pointed window and a door.

A tall rubble stone garden wall continues around the upper end of the garden, lined with red brick on the inside and topped with flat stone coping, ramping up to follow the rising ground. The wall returns south, forming the western boundary of the churchyard and the back wall of The Bothy. It features battlements and two pointed doors immediately south of The Bothy, then returns east, south, east, and south again, ending at the corner of the former stables. There is one pointed arched opening just before reaching the stable corner.