The church at Finnure is a compact rubble limestone structure, disused now but carefully restored after a period of ruin. Its pointed arch doorway is a detail worth pausing over. The stonework is carefully tooled yet partly uncut, a quality that specialists read as a marker of early construction, when the craft was present but the finishing conventions were not yet fully settled.

The interior is corbelled overhead, meaning the ceiling is formed by stones that project inward in successive courses rather than being supported by vaulting or timber, a technique with roots stretching back through medieval Irish ecclesiastical building. The limestone-flagged floor and a more recent altar at the east end sit alongside inscribed memorial plaques and a timber sculpture. Those plaques connect the site to the O'Madden family, a Gaelic dynasty associated with Hy-Many, the old kingdom also known as Uí Maine, which covered much of east Galway and south Roscommon. For this family, Finnure appears to have served as a burial ground across generations. A sculpted cross finial tops the entrance gable, and an inscribed plaque marks the west gable facing the road. The graveyard setting, with its rendered boundary walls and iron entrance gates, gives the whole site a gathered, enclosed quality that keeps it distinct from the surrounding landscape.