Trinity Presbyterian Church, James Street, Omagh, Co. Tyrone, BT78 1DL

Trinity Presbyterian Church is a double-height stone Gothic church built in 1856 and enlarged in 1901, located on James Street in Omagh. The church was designed by Mr. Foreman from Londonderry and opened by the renowned Sir Henry Cooke. It was built to replace an earlier church on the site dating to 1754, which had become dilapidated. The congregation itself had broken away from First Presbyterian Church.

The building is cruciform on plan, facing north, with a diminished canted projecting bay to the north, lower transepts to the east and west, and a single-storey porch to the south gable. The walls are constructed of square and snecked basalt over a splayed plinth. Diagonal buttresses with offsetting are surmounted by octagonal pinnacles with terracotta cusped finials. The pitched roof is covered in natural slate with roll-top blue and black clay ridge tiles, moulded stone verge coping, and ogee metal gutters set on chamfered stone corbels.

Windows throughout are gothic stained glass casements with splayed sandstone surrounds. The window apexes feature quatrefoils with scalloped timber louvres. Doors are gothic painted timber, vertically sheeted with wrought-iron strap hinges and stained glass tympanums. The principal north gable is abutted by a porch to its centre, with two lancets flanking the porch and a single window to each side. The porch itself has a hipped roof with a slightly projecting gabled entrance bay containing a double-leaf door flanked by diagonal buttresses. The east and west elevations are each abutted by transepts; the exposed sections display four windows wide on the east. The transept gables feature buttresses and single central timber tracery stained glass windows with splayed sandstone surrounds and stop-ended hoodmoulds, with tapered pinnacles at the apex. The rear south gable is abutted to its centre by a projecting bay with a hipped roof, single doors to the right cheek and left canted elevation, and lancets elsewhere.

The church's interior displays fine stonework and craftsmanship and remains well preserved. The building was extensively repaired in 1969 and refurbished around 1990. A major extension undertaken in 1901 removed the gallery, added the two transepts, created a new entrance porch at the front, and added a minister's room and two new entrance doors at the rear. The church has remained little changed since that time. A new manse was completed in 1973 and the church bell was installed in 1974.

The church is situated on an elevated site at a road junction, enclosed by cast-iron railings and gates to the west, steel railings over a roughcast plinth to the rear, and a roughcast boundary wall to the east. Access to the undercroft is via an external stair to the left of the projecting bay. The building forms part of a distinct group with its adjoining church hall and sexton's house, and sits within a notable collection of churches of four different denominations in Omagh, including the Sacred Heart Roman Catholic Church, Omagh Methodist Church, and St. Columba's Church of Ireland. The Presbyterian church building, although not the earliest congregation in the town, is the oldest ecclesiastical structure remaining in Omagh's town centre. The original 1856 structure was the inspiration for the neighbouring Omagh Methodist Church, built the following year, with which it shares similar detailing. The contractor Mr. William Mullan, who later worked on the Methodist church, may have contributed to the design of this building given the similarities between them.