Llangedwyn Hall, an eighteenth-century house on a more ancient site and remodelled several times (nprn 27413), is located near the English border to the west of Oswestry. It is notable for its well-preserved and rare early eighteenth-century grand formal terraced garden in a fine position on the north side of, and overlooking, the Tanat valley. It retains some of its original ornamental features, and the absence of later overlay makes the garden especially important.

The  gardens date from the early eighteenth century during a remodelling episode. The main approach is from the south-west, off the B4396 road to Llanrhaeadr-ym-Mochnant, through wrought-iron entrance gates (27414) along a walled drive flanked by rows of limes to the former forecourt, now the Rose Garden. This is a small walled courtyard immediately to the south of the house, the original entrance court with an oval carriage turn. The present drive skirts the Rose Garden to the west and leads to the outbuildings and west end of the house.
The main terraces lie to the east of the house and descend the south-facing slope in three levels towards the river Tanat which has been canalized to run parallel with the garden walls.

The uppermost, and narrowest, terrace is still gardened. It has a brick wall behind and a higher buttressed brick wall dropping to the middle terrace. This is a wide lawn surrounded by a gravel path which extends west to the large gravel sweep on the east side of the house. Much of the lawn is taken up with two large circular stone ponds with central fountains fed from a small lake, the Briw, about 3km away above the garden.

The upper terrace walls are built in an L-shape bounding the lawn below on the north and east sides. Steps on the west end lead to a classical brick summerhouse. Steps at the east end lead to the site of a garden pavilion, no longer extant. A door in the east perimeter wall, on the upper terrace, leads to the stallion paddock. The third level of the garden, about 5m below the middle terrace, is broken up by two brick walls with strips of grass in between. The second strip is thought to have been occupied by a canal. The lowest area of grass was a bowling green with a canal on its southern edge, known as the Eel Pond. This is now dried up. Access to this level is by a set of stone steps at the east end of the middle terrace.
The stallion paddock to the east of the garden is an octagonal stone building with a slate roof, divided into four loose-boxes for stallions. The field was originally divided into four enclosures, one for each loose-box.
To the north and east of the gardens is an extensive area of mixed woodland (The Warren) traversed by a network of paths. 

South-west of the house, alongside the public road, is the walled kitchen garden (700116).

Source:
Cadw 1999: Register of Parks and Gardens of Special Historic Interest in Wales, Powys, 152-4 (ref: PGW (Po)1(POW)).

RCAHMW, 28 April 2022