1257 – Roscommon Abbey, Co. Roscommon Founded in 1253 and consecrated in 1257. The church originally consisted of one long aisle with lancet windows. Those on the east and west walls were replaced in the 15th century with traceried windows.
1762 – Harrison Hall, Roscommon, Co. Roscommon Architect: John & George Ensor Now a branch of the Bank of Ireland but known also as Harrison Hall.
1777 – Old Gaol, Roscommon, Co. Roscommon The building originally consisted of 36 Cells and the Governor’s Private Dwelling. It is known for having a hangwoman “Lady Betty”,
1862 – Dr. Browne Memorial, Roscommon Architect: George Goldie “This elaborate monument has recently been erected in the Roman Catholic Church at Roscommon, to commemorate the late Catholic bishop of that portion of Ireland.
1883 – Court House, Roscommon, Co. Roscommon Architect: Christopher J. Mulvany Selected design after an architectural competition to replace County Court House that was destroyed in a fire in 1882.
1883 – Design for Roscommon Court House Architect: William Kaye-Parry & H.A. Cheers Design submitted for new courthouse after the previous building was damaged by fire.
1895 – Presbytery, Roscommon, Co. Roscommon Architect: W.H. Byrne Solid late-Victorian house with bay windows on several sides, and rather awkward decorative pediments over paired ground-floor windows..
1903 – Church of the Sacred Heart, Roscommon Architect: Walter G. Doolin & P.J. Kilgallen / O’Callaghan & Webb Main body of church constructed between 1897 and 1903 by Walter G.