The site at Aghalahard features a polygonal bawn, a type of fortified enclosure that was once common across Ireland during the plantation era. This particular bawn is notable for its square turrets and the structures it protects within its walls; a tower house occupies the southwest corner whilst a later building sits in the southeast corner. The defensive walls have been rebuilt multiple times over the centuries, evidence of both the site’s longevity and the ongoing need for protection in what was often turbulent countryside.

The bawn’s military purpose is still evident in its remaining features. Three gun loops can be found in an embrasure to the west of the tower house, strategically positioned openings that would have allowed defenders to fire upon approaching threats whilst remaining protected behind the walls. These details, recorded during an archaeological survey of the Ballinrobe district, paint a picture of a fortification that evolved with changing military technology, transitioning from medieval defensive strategies to accommodate early firearms.

Now designated as National Monument number 243, the site represents an important piece of Mayo’s architectural heritage. The combination of the polygonal bawn with its square turrets, the tower house, and the later additions tells a story of continuous occupation and adaptation spanning several centuries. Such fortified homesteads were once the seats of local landowners who needed both comfortable accommodation and robust defences, making them fascinating windows into Ireland’s complex and often violent past.