Garthgynan House, a seventeenth-century building (nprn 27188), lies on a low hill to the south-east of the village of Llanfair Dyffryn Clwyd. It is approached from the north by a track off the B5429 which crosses the Dwr Iâl stream by a small stone bridge. A short straight drive branches off the track and leads to the north front of the house. 
The pleasure garden is a small walled garden attached to the house on its south side. Like the house, parts of the lower walls are stone, possibly dating to the late sixteenth or early seventeenth century. The brick walls, terrace and pavilion relate to the second stage of the mid-seventeenth century rebuilding of the house. The north-south boundary walls of the garden contain 31 small bee boles.

The garden can be approached from three directions, either directly from the house, or by a door in the west wall, or by a door in the north wall next to the house. A banqueting house in the south-west corner of the garden was possibly mirrored by a similar building in the south-east corner, the two joined by a raised turf terrace with fine views to the south. It is bounded by a steep grass scarp, with three flights of stone steps up it. In the centre of the garden is a small stone-edged pond. The central area of the garden is half lawn whilst the rest is laid out with a mixture of vegetable and flower beds in small plots. Against the east wall there is a line of small square beds, with a shrub border across the front of the corresponding west wall. Perimeter and cross gravel paths run through the garden. Outside the eastern perimeter wall narrow terraces descend a steep bank, the orchard, with some old fruit trees still there. At its foot is a linear, canal-like, pond.

The approach track to the north of the house passes through an area of mixed woodland where there is a pond, now dry but once used for supporting wildfowl.

Source:
Cadw 1995: Register of Parks and Gardens of Special Historic Interest in Wales, Clwyd, 88-90 (ref: PGW(C)37).

RCAHMW, 20 June 2022