Kilbrittain Castle, Kilbrittain, Co. Cork

What stands today is not one structure but four, or arguably more: medieval tower house fabric fused with an eighteenth-century block, a nineteenth-century Gothic Revival remodelling, and twentieth-century repair work, all stitched together on a rise chosen for its command of the surrounding ground in every direction. The result is a building that reads less as a single architectural statement than as a physical record of who held it, and when.

The site's early history is a churn of conquest. It began in the hands of the O'Mahonys before the Anglo-Norman de Courcy family seized and enlarged it. They in turn were displaced by the MacCarthys after the Battle of Inchydoney in 1295, and Kilbrittain became the principal seat of the MacCarthy Riabhach branch from the early fifteenth century onward. A circular tower in the south-east corner of the bawn, the fortified enclosure wall typical of Irish castle sites, dates from this period; its tapering walls still show loop openings for defence. A chimneypiece fragment from the tower's vanished upper storeys, now kept at nearby Upton House, bears a Latin inscription dating it to 1556 and naming Donal McCarthy and Margaret FitzGerald as its makers. The castle changed hands violently again in 1642, surrendered by a Confederate garrison after artillery bombardment, then passed to the McCarthys of Muskerry at the Restoration in 1660, only to be forfeited following the Battle of the Boyne in 1690. It eventually came to the Stawell family, and Jonas Stawell, who died in 1767, dismantled much of the old ruin to build a bow-ended Georgian house in its place. That house was given a full set of Gothic Revival battlements and machicolations in 1871, the projecting parapet openings once used for dropping objects on attackers below, by which point the castle's military function had long since given way to display. History caught up with it again on 26 May 1920, when it was burned during the Irish War of Independence in an attack meant to stop it becoming a military base, an event that made it the first "Big House" destroyed in County Cork during that conflict. The Georgian shell was later taken down, but an adjoining wing was restored between 1968 and 1969 by the inventor Russell Winn, who died in 1980.

What survives now is a genuinely layered building: a seven-bay, three-storey range built around 1750 and Gothicised in 1871, complete with corner turrets, crenellations, and a carved crest set into the machicolation; a taller nineteenth-century tower to the west; cruciform gun loops from an earlier defensive phase; and Tudor arch and lancet windows with tooled stone surrounds marking out different building campaigns. The bawn wall's south-east tower remnant, along with the rubble stone enclosing walls and their carved gate piers on the approach, are worth picking out precisely because they predate almost everything else standing here, quiet survivors of a site that has been rebuilt, burned, and rebuilt again for the better part of a thousand years.