Though the castle itself has long since vanished, its location remains significant in the local landscape, sitting just north of Conlanstown House with the area known as Shanbally lying approximately 230 metres to the northwest. The 1837 Ordnance Survey six-inch map provides valuable evidence of the structure's former existence, depicting the castle standing atop a circular mound at this elevated position, which reaches 264 feet above sea level according to the triangulation station marker that now occupies the spot.

Today, visitors to the site will find only subtle traces of this once-prominent fortification. The most visible remnant is a low, semi-circular scarp measuring roughly 33 metres from northwest to southeast, best observed when approaching from the northwest, north, or northeast directions. This curved earthwork represents all that remains of what appears to have been a levelled castle site, originally constructed on top of a deliberately created flat-topped mound; a common defensive feature in medieval Irish castle construction.

The historical record offers tantalisingly few details about Conlanstown Castle itself, leaving its origins, builders, and ultimate fate largely to speculation. What remains clear from the physical evidence is that this was once a strategically positioned stronghold, taking advantage of both natural topography and artificial earthworks to create a defensive position with clear sightlines across multiple approaches. The careful documentation by Frank Coyne and Caimin O'Brien ensures that even these modest remains contribute to our understanding of medieval settlement patterns in Westmeath.