When the Ordnance Survey Letters documented it in 2002, they described it as “a Castle in ruins, of which a great part is remaining”, suggesting that substantial portions of the structure were still visible at that time. The castle stood on level pasture land, a common setting for medieval fortifications in Ireland where defensive positions often took advantage of open ground for visibility.

The monument met an unfortunate end around 1980 when the ruins were burnt, though the circumstances of this fire remain unclear. Following the damage, the remaining structures were completely removed from the site, leaving no trace of the castle visible above ground today. Visitors to Simmonstown would find it difficult to imagine that a castle once dominated this spot, as the landscape has returned to unremarkable pasture.

Whilst nothing remains on the surface, archaeologists note that sub-surface features likely survive beneath the soil. These hidden remnants; foundations, defensive ditches, or other buried structures; could still tell the story of this lost castle if properly excavated. The Site and Monuments Record continues to maintain the location as a recorded archaeological site, preserving its place in Ireland’s medieval heritage even though the physical monument has vanished from view.