What survives today is merely the ivy-clad northwest corner of what was likely once a formidable tower house, rising three storeys high within the bounds of an ancient ecclesiastical enclosure. Located about 30 metres southwest of the parish church, this fragmentary structure appears on the Down Survey maps of 1656-8, marked simply as a tower adjacent to the church, offering a glimpse into the defensive architecture that once dotted this rural Irish landscape.

The castle’s history is intertwined with some of the notable landholding families of 17th-century Ireland. According to the Civil Survey of 1654-6, the Earl of Fingal and Henry Plunkett of Hartstown held 325 acres at Kilskyre in 1640, encompassing the sub-denominations of Villenaghtownme, Millstowne and Cullinstowne. These records paint a picture of a substantial estate centred around what was then presumably a more complete fortification, positioned strategically on its slight rise to oversee the surrounding lands.

Though time and the elements have reduced the castle to a single corner, obscured further by a thick covering of ivy that prevents identification of any distinctive architectural features, its presence within the ecclesiastical enclosure speaks to the complex relationship between religious and secular power in medieval and early modern Ireland. The proximity to both the parish church and the round tower at nearby Kilskeer places this ruin within a broader network of historical sites that chart the evolution of settlement, worship and defence in the Irish midlands from the early Christian period through to the upheavals of the 17th century.