It is not a ruin in any dramatic sense, not a tower or a doorway or something cordoned off with signage. It is simply a wall, going quietly about the business of being very old in a busy urban streetscape.

The Urban Survey of Limerick, published in 1989 by Bradley and colleagues, catalogued the fragment under the designation House A and offered a careful description of what is actually there. The wall is built of roughly coursed rubble limestone, meaning the stones are stacked in approximate horizontal runs but without the precise cutting of ashlar masonry. It runs approximately 3.5 metres in length and rises to around 5.5 metres in height, which is substantial for something so easy to overlook. At the base there is a batter, a deliberate outward slope of the wall face at ground level, a feature common in medieval construction that adds structural stability. Higher up, at around 4.5 metres, a projecting dressed corbel survives. A corbel is a stone bracket built into a wall, typically used to carry a beam, a floor, or some other structural load above it. Near the corbel the surveyors also noted a segmental relieving arch, a shallow curved arch built into the wall to distribute the weight of masonry above a void or opening and protect whatever lay beneath it. The combination of these features, the corbel and the arch, suggests this was not merely a boundary wall but part of an actual building, a medieval domestic structure whose wider footprint has long since been absorbed by later construction.

The wall sits in the gap between numbers 32 to 33 and number 34 Mary Street, close to the Garda station. There is no formal heritage interpretation on site, so a visitor needs to know what they are looking at before arriving. The dressed corbel and the line of the arch are the details worth seeking out, and they are most easily read from a short distance back rather than up close. The surrounding streetscape gives little away, which is precisely what makes the fragment interesting; it persists not because anyone made a particular effort to preserve it, but because later development simply left it standing.