Not a stone, not a foundation course, not a scatter of rubble. The place is known as Aittighe Guairim, meaning the site of the house of Guairim, and the name itself has effectively become the monument. What survives is a memory encoded in Irish placename tradition rather than anything a visitor might recognise as a ruin.

The Ordnance Survey Letters, those remarkable nineteenth-century field notebooks compiled as part of the original mapping of Ireland, record the translation and local tradition attached to the name. Guairim, according to those accounts, was said to have been a contemporary of Saint Colman, the seventh-century monk who founded a monastery on Inishbofin after a period of exile among the Northumbrian church in England. That association, if taken seriously, would place Guairim somewhere in the early medieval period, making this site considerably older than its near neighbour to the south, the castle site also associated with his name and recorded by the historian James Hardiman in 1846. When the first edition of the Ordnance Survey six-inch map was drawn up, the building was recorded as a rectangular structure, still legible in the landscape. By the time the second edition was published in 1899, the cartographers could only append the words "Site of". The structure had vanished entirely within a few decades of first being formally noted.

There is nothing to see here now in any conventional sense, which is precisely what makes the place worth thinking about. The absence is the point. A name persisted in local speech long enough to be written down, translated, mapped, and cross-referenced with early Christian tradition, all before the last physical trace of the building disappeared from the hillside above the bay.