Aghadrumsee C. of I. church, Killygorman, Rosslea, Co Fermanagh, BT92 7AU

Aghadrumsee Church of Ireland church at Killygorman, Rosslea, County Fermanagh is an early 19th-century barn church erected in 1816, with a three-stage tower to the south and projecting chancel to the north. The building is aligned north-south on the east side of Aghadrumsee and Killygorman Townland, set within a churchyard enclosed from the road by a high rubble stone wall with a pair of cast-iron gates.

The church has a pitched natural slate roof with advanced stone eaves and plain eaves board to the north gable, along with half-round metal rainwater goods. The walls are harled over a cement-rendered basecourse. All windows throughout the building are lattice glazed and set in splayed chamfered reveals with hood-moulds and chamfered stone cills, unless otherwise noted.

The south gable is abutted at its centre by the tower. The exposed right side features a squat lancet window with two narrow timber mullions set below eaves level. The left side extends slightly to accommodate a stairwell providing access to the upper stages of the tower and contains a tall central lancet window to the south.

The tower consists of three stages, each slightly instepped from the one below and delineated by a stringcourse. The second stage is considerably shorter, and the third stage stands free. The tower features a battlemented parapet with tall pointed finials at each corner. The first stage contains the entrance door to the east, consisting of a double-leaf timber sheeted door with strap-hinges and fixed Gothic-headed tympanum over, set in a sweeping splayed chamfered reveal and accessed by three stone steps. Above the door is a stone shield bearing the inscription "To the Glory of God A.D. 1820". The south face has a lancet with cusped head. The first and second stages are almost completely abutted by the stairwell to the west. The exposed east and south faces of the second stage each contain a pair of small squat fixed lancets with central sandstone mullion in splayed square reveals. The third stage has a louvred lancet to each face.

The east elevation displays three Y-traceried lancets. The north gable is abutted by a lower chancel, which projects slightly and is detailed in the same manner as the church. The exposed section is blank. The north face of the chancel has a metal-framed stained glass lancet window with two narrow horizontal bars set to centre, while the right and left cheeks are blank.

The west elevation is abutted to the north end by a vestry and to the south end by a boiler house. The exposed section is blank. The vestry has a hipped artificial slate roof with walls of dressed stone laid in irregular courses. The north and west elevations each have a Tudor-headed metal-framed window set in a stepped stone reveal. The south elevation contains a Tudor-headed tongued-and-grooved sheeted door with heavy cast-iron lock and door-pull.

The boiler house is detailed as the church with a monopitched artificial slate roof. To its left is a tall harled chimney that rises up the wall of the church and above eaves level. The north face has a 6/6 sliding sash window with horns and stone cill. The west face is blank, and the south face has a modern timber sheeted door set to the right.

The church is cited on the 1834 Ordnance Survey 6-inch map. It was restored during 1875-78, with the bell dating from 1899 and a further restoration undertaken in 1920. The churchyard contains a number of 19th-century and 20th-century memorials. The listing extends to the church, churchyard, and walling.