The former Church of Ireland parish church of Castlemagner in the demesne of Ballygiblin House, in north County Cork, does not. The entire structure was removed during quarry operations in 1957 and 1958, leaving a place that is now notable precisely because nothing remains of it. What had stood for centuries, recorded on Ordnance Survey maps as recently as 1937, was simply taken apart for its stone.

The building had a complicated identity even before it vanished. Nineteenth-century maps labelled it a monastery in ruins, while later maps called it a church in ruins, and local tradition held, as recorded by Samuel Lewis in 1837, that it had been intended to replace the church at Castlemagner but was never completed. A photograph from the early twentieth century, published by Grove White, shows a substantial random-rubble ruin with ivy covering its upper sections, what appear to be two pointed lancet lights in the east gable, and a projecting wing near the north wall. A Latin inscription carved on a door jamb read "DO. DV. IN DEI NOMINE AMEN 1613", placing at least some of the visible fabric in the early seventeenth century. Writing in 1934, Bowman described it as a ruined Protestant church and recorded the local understanding that it had fallen out of use once a new church was built at Castlemagner. Whether it was truly unfinished, superseded, or both, the building appears to have spent most of its existence as a ruin rather than a functioning place of worship, accumulating layers of local legend alongside its ivy.