This four-storey circular tower, constructed from roughly coursed limestone rubble, displays the typical defensive base batter that characterised such structures. Though time has taken its toll, with the eastern side now destroyed, the remaining fabric reveals much about its original design. Visitors can still observe evidence of the wooden floors that once divided the interior, supported by stone corbels featuring punch dressing and drafted margins.

The castle’s defensive capabilities remain evident in its ground floor gun loops, whilst domestic arrangements are represented by a mural passage leading to a garderobe in the southwest angle at first floor level. The upper storeys, though heavily cloaked in ivy, retain two imposing rectangular chimney stacks that rise from fireplaces positioned at the southwest and northwest faces. Intriguingly, the tower exhibits an unusual architectural quirk; whilst the bottom two floors maintain a circular plan both internally and externally, the top two floors feature square interiors within their circular exterior walls.

Archaeological evidence suggests the tower once stood within a bawn, or fortified enclosure, measuring approximately 29.6 metres north to south by 24 metres east to west. Remnants of this defensive wall can still be traced, particularly where it attached to the tower’s southwest side before returning northeast, now visible as grass-covered rubble. The site’s later history is written in the landscape too, with 19th-century demesne walls to the north and a house from the same period built directly along the line of the original bawn wall to the southeast. Historical records identify this as O’Carroll castle, linking it to one of the region’s most prominent Gaelic families.