Main Guard — Sarsfield Street

Formerly detached five-bay two-storey courthouse and market house, built 1673, with arcaded ground floor to front and north gable, and pediment and cupola to roof. Recent timber and metal-clad three-storey extension added to southwest. Until restored c.2000, building had been five-bay three-storey with triple public house front to ground floor, and timber sliding sash windows. Now in use as museum. Sprocketed hipped slate roof with leaded ridge, cut limestone eaves course, having carved limestone pediment over centre bays with clock, and carved limestone cornice. Both eaves course and cornice are articulated over centre bays to suggest breakfront. Copper roof with wrought-iron weather vane to octagonal timber cupola. Dressed sandstone walls with two recessed square panels to centre spandrels of arcade with moulded limestone surrounds. Rubble sandstone inner wall to ground floor and rendered walls to north and south side elevations. Arcade has round chamfered sandstone arches supported on dressed sandstone columns having carved sandstone imposts, and with recent cut limestone steps between columns. Square-headed window openings to first floor with cut limestone surrounds and keystones, carved sills and replacement timber casement windows. Round-headed window openings to cupola with six-over-six pane timber sliding sash windows. Inner wall of ground floor has round-headed doorway with cut sandstone voussoirs and carved sandstone imposts and recent square-headed doorway, both with timber battened double-leaf doors.