On the demesne lands of Rathcoffey in County Kildare, a building was once considered worth naming on a map and then, within a generation or two, quietly ceased to exist. The structure in question was a dovecote, a dedicated housing for pigeons kept as a source of fresh meat and fertiliser, common on larger estates from the medieval period through to the nineteenth century. By the time the Ordnance Survey revised its mapping of the area, the old pigeon house had vanished from the record entirely.

The 1838 edition of the six-inch Ordnance Survey map marks the site plainly as "Old Pigeon Ho.", placing it on the grounds associated with Rathcoffey Castle and the later house that stood roughly 260 metres to the east-south-east. The word "old" in that 1838 annotation is telling: even at the moment it was being recorded by surveyors, the building was already considered a relic. It does not appear on later editions of the OS maps at all, and aerial photography has confirmed what might already be suspected, that nothing now remains above ground. The site belongs to a category of losses that are easy to overlook precisely because the structures themselves were always functional rather than monumental, buildings valued for what they produced rather than what they signified.