Retaining wall to courtyard at Powis Castle

The retaining wall to the courtyard at Powis Castle, along with flanking entrance pavilions, forms part of the late 17th-century development of the castle. Powis Castle originated as a Welsh stronghold, likely belonging to Owain Cyfeiliog and his successors, around 1170. While parts of the castle may date from the late 12th to early 13th centuries, a substantial rebuilding program occurred around 1300, establishing the layout of the present buildings. The Herbert family acquired the castle in 1587, leading to a gradual transformation into a country house. The outer gateway and its associated courtyard retaining wall were constructed in 1668, replacing an earlier structure destroyed during a siege in 1644.

The entrance pavilions are constructed of brick with stone dressings, including a balustraded parapet on the south and east elevations, and stone facing on the west wall, likely added during early 19th-century remodelling. Two single-story pavilion blocks are connected by an arched entrance. A shield of arms above the gateway dates to the early 19th century. The west elevations feature four-centred arched doors, double doors in the north pavilion, with corresponding loft entrances above. The south pavilion's garden-facing elevation has three-by-three-light stone mullioned and transomed windows, appearing to be original features, and squared balustrading to the parapet. The courtyard-facing sides of the pavilions originally had open arcades that were later infilled with mullioned windows. These buildings were intended to serve as a coach house and stables, and original stable fittings, including arcaded stalls, survive within the south pavilion.

The retaining wall itself defines the southern boundary of what was originally the outer bailey of the medieval castle. Constructed of rubble with a squared balustraded parapet, it is likely of late 17th-century origin. This is evidenced by its depiction in a 1684 drawing by Thomas Dineley, and the detailing connects it with the pavilions, the 17th-century entrance, and the stairs leading to the castle. Dineley's drawing indicates a former raised walkway where the current raised bed is located. The pavilions and retaining wall are integral components of the late 17th-century works at Powis Castle, notably forming part of a larger scheme encompassing both entrances and the terraced gardens.