Llantysilio Hall (nprn 27424) is located to the north-west of Llangollen inside a bend in the river Dee. It is registered for its fine axial arrangement of house, walled garden and avenue, dated to the eighteenth and nineteenth century, in a picturesque parkland location (700085).

The garden is laid out to the east, west and south of the house. To the east and west the ground is level, to the south it drops steeply down to the walled garden (27425). The forecourt is a rectangular area bounded on the north and east by a shrub border with a few ornamental trees. A gravel path around the house leads to the west garden which is a rectangular lawn bounded by a bank of rhododendrons on the north and by an unkempt shrub and woodland area to the west.

To the south of the house is a steeply-sloping lawn, levelling out on the site of the former house, and bounded on the south by a revetment wall with central steps down to the back drive. At the west end a small stone pavilion is built into the wall. Informal groups of deciduous trees with shrub underplanting lie either side of the lawn. At the west end of the foot of the slope an overgrown paved area and small pool are perhaps the remains of a former L-shaped conservatory.

The lime avenue, which probably dates from the early eighteenth century, projects from the south side of the walled garden towards the river and is part of an axial arrangement of the house and gardens.

Sources:
Cadw 1995: Register of Parks and Gardens of Special Historic Interest in Wales, Clwyd, 164-6 (ref: PGW(C)60(DEN)).
Ordnance Survey 25-inch map, sheet: Denbighshire XXXIV.10 (second edition, 1895).

RCAHMW, 11 April 2022