Located in a field to the north of the village of Eoghanacht is the remains of what is thought to have been a tower house. Known locally as an Seanchaisleán it is said to be the remains of an early O Brien stronghold. This is quite probable as the O Briens were dominant chieftains both in Munster and on the islands for centuries. It is likely that they would have had close links with the nearby Seven Churches whose founder Naomh Brecáin came from Co. Clare and whose monastery probably enjoyed their patronage.