Walled 'knot' garden at Bryn Bras Castle

The walled 'knot' garden at Bryn Bras Castle is a near rectangular area measuring approximately 300 by 300 meters, slightly longer from east to west than from north to south. It features a high, roughly coursed rubblestone wall on the north side facing the road, which has a brick lining on its southern face. The west and south walls are made of rubblestone and are battlemented with open arches, standing about 3.5 meters tall, while the eastern wall is lower. There are three entrances to the garden: the main entrance is located towards the west on the south side, featuring tall white-painted wrought-iron gates made by Brunswick Ironworks in Caernarfon during the 1920s. Another entrance is found in the north-west corner, consisting of wooden doors that lead to the road and a boiler/potting shed area, and a small iron gate in the north-east corner provides access to brick and slate steps.

Against the north wall towards the east end, there is a completely restored lean-to glass house designed for vines. The battlements of the south wall are adorned with two stone eagles flanking a built-in sundial. The garden is designed with box hedges, originally planted in the 1920s, and features near symmetrical gravel paths along with a variety of shrubs, trees, and flowers.