Abergavenny Museum

Abergavenny Museum is a building constructed from random red sandstone rubble with bands of Forest of Dean stone. The roof is not visible behind the parapet, but there is Welsh slate on the wing. The structure resembles a tall rectangular keep, with a lower gabled service wing attached to the north-west narrow side. It has two tall storeys, each with a band above, and features three sets of windows arranged in a 3 x 1 pattern, along with circular corner turrets. The entrance is located on the narrow side, featuring a projecting porch with chamfered corners and a 4-centred arch entrance, as well as small windows on the returns and a 2-light window above. The long walls have three of these windows on each floor, while the short rear wall has one window on the first floor only, with the service wing joined below. All external joinery dates from the late 20th century. The building has castellated parapets and turrets with suggested battlements.

The service wing is also two storeys but is set lower, featuring 3 x 1 bays with octagonal corner turrets. It has mullion-and-transom windows below and casements above, along with Gothic windows in the gable end. Some medieval fabric is incorporated into the northern gable, and the roof has a plain moderate pitch.

Currently, the castle houses the town museum, which includes parts of several rooms from demolished houses in Tudor Street and other nearby houses. The building has undergone major internal reconstruction, resulting in little historic fabric being visible, as the lower and ground floors are used for museum displays and the upper floor serves as modern offices.