Brampton Bryan Castle is in the small village of Brampton Bryan in north-western Herefordshire, England, 50m south of the River Teme. The castle guarded an important route from Ludlow along the Teme Valley to Knighton and on into Central Wales.
The current buildings include the ruined earthwork and buried remains of the quadrangular castle. The medieval layout consisted of four ranges built around a courtyard, with a gatehouse contained within the southern curtain wall, to which a large outer gatehouse was added. The whole was constructed on a motte and surrounded by a moat, with the approach to the castle being from the south across a bridge to the gatehouse.
The north range contained the hall and service bay, both at first floor level, with the kitchen to the east. Private accommodation was found in the other ranges, with further chambers above the gate passage of the inner gatehouse and on the first floor of the outer gatehouse.
The castle is mentioned in the Domesday Book (1086) although the actual date of its foundation remains uncertain. The earliest reference to a building on the site is in 1295. During the previous year the owner Bryan de Brampton had died and Robert Harley inherited the castle through marriage to his daughter Margaret. For almost 700 years since the castle has remained in the Harley family. It was severely damaged in 1642 during the Civil War.