The building is constructed of stone and surrounds two quadrangles. The smaller Outer Quadrangle to the north consists of: the outer gate (16th century); the brewhouse (14th century); from the 15th century, the guest wing, kitchen (which had to produce food for thirteen poor men and 100 men at the gates); the porter's lodge and the three-storey Beaufort Tower of c. 1450. This has three niches above the arch, one of which still contains the weathered statue of Cardinal Beaufort, who was Bishop of Winchester, and the tower and spaces above the porter's lodge used to be the Master's lodging.