County Monaghan on Wikipedia.

Ballinode. © Jack Storey.
Ballyalbany, Presbyterian Church. © Jack Storey.
Ballybay, Christ Church (Church of Ireland). © Jack Storey.
Bawn, St. Patrick (R.C.). © Karen Grace.
Braddox, Presbyterian Church. © Jack Storey.

Carrickmacross. Link to external website, covering a number of the local churches.
Clontibret, the Presbyterian Church at Legnacreeve. © Jack Storey. St. Colman (CoI). Another view. Both © Malcolm Totten.

Drum, Church of Ireland (Anglican). © Jack Storey.
Drumsnat, an early monastic site, and the burial place of two of Oscar Wilde's sisters. © Jack Storey.

Errigal Trough, Church of Ireland. © Jack Storey.

Glaslough, Donagh Parish Church. © Peter McCrodan.
Glennan, Presbyterian Church. © Jack Storey.

Kilmore, the Parish Church. © Malcolm Totten.

Monaghan.

Newbliss, Killeevan (Presbyterian). Killeevan (Church of Ireland). Both © Jack Storey. Newbliss Church of Ireland. © Malcolm Totten.

Smithborough, Presbyterian Church. © Jack Storey.
Stonebridge, Presbyterian Church, founded 1700. © Jack Storey.

Tedavnet, Catholic Church. Another view. Interior view. All © Janice Bacino.
Tyholland, Church of Ireland. © Jack Storey.