Church of the Sacred Heart — Arbour Hill

Detached cruciform-plan double-height former Church of Ireland church, built 1848, now in use as Catholic church. Full-height transepts, lower chancel to west end, pair of square-plan two-stage towers flanking east gable, round-plan belfry with conical roof and round-headed openings to southeast tower. Gabled entrance porch to east elevation. Pair of arcaded flights of stairs to north and south elevations between transepts and towers, each entered through central arch, providing access to galleries. Pitched slate roofs with cast-iron rainwater goods, carved limestone copings and cross finials to gables. Sheet metal pyramidal and conical roofs to towers. Cut limestone walls with corbel table, pilaster buttresses, and plinth. Triple lancet window openings to chancel and transept gables, comprising pointed arch flanked by round arches. Round-headed window openings to other openings. Paired round-arch windows to east elevation of towers, set within arched recess. Stained-glass windows to chancel, lattices windows to other openings. Carved granite surrounds, sills, and hood mouldings throughout. Round-headed door openings throughout, with cut granite surrounds, some with roll mouldings and tympana. Braced and bracketed queen-post roof to interior with timber arcades between posts and carved corbels to wall-posts. Double-height gallery to east, having blind arcaded panelling, with canted bay to lower gallery containing organ. Gallery to north and south transepts, having round-headed door opening to west wall of gallery in north transept, providing access from prison. Tripartite stained-glass window to chancel, dated 1925. Regimental flags and pennants of Irish Defence Forces hanging from galleries. Recent altar and pews. Located in own grounds in Arbour Hill Prison complex.