Royal Engineers Museum, Brompton Barracks

The Royal Engineers Museum, located within Brompton Barracks, was originally an electrical engineer's school constructed in 1904 by Major E C S Moore RE. It was later converted into a museum in 1987. The building is of red brick with Portland stone dressings and a slate roof, arranged in a quadrangular plan.

The symmetrical front elevation is two storeys high and features eleven bays. Prominent three-storey square towers are set forward, flanking the entrance and outer corner bays. The facade includes a rock-faced stone plinth, horizontal cill and lintel bands, a cornice, a coped parapet, and pilaster and jamb strips between the windows. The parapet has ramps at the corners, and the corner towers have drums topped with ashlar domes and finials. An elaborate entrance bay features thick Doric columns on tall plinths supporting brackets, a full-width balcony and balustrade, a round-arched doorway with panelled double doors and fanlight, and a wide first-floor lunette divided by mullions and a transom. Windows have metal frames. A late 20th-century barrel-vaulted lantern is visible above the entrance, illuminating the central quadrangle.

The side elevations incorporate rear, slightly taller, corner towers and domes. The left-hand return has a central round-arched carriage entrance. The rear elevation has a lower, full-width range with coped end gables, a ridge lantern, round-arched windows linked by hood moulds, a left-hand carriage entrance, and two altered mid-20th-century vehicle entrances. An earlier square chimney in the inner courtyard has been glazed in. The domes were originally designed for the mounting of searchlights.

The interior features a fine entrance hall with a large Imperial staircase on either side, each having a moulded soffit, decorative newels and balusters, a curtail, Jacobethan-style strapwork panelling, five-panel doors with eared architraves and pediments with scrolled tympana, and a plastered ceiling divided into panels. A three-bay screen comprises thick columns on tall plinths with carved terms above. The building exemplifies the extensive architectural work of the Royal Engineers and is considered large and decorative.