Shanagarry Castle, locally also known as Penn Castle, lies behind a church in the village of Shanagarry, in County Cork in Ireland.
Shanagarry Castle was probably built as a crenellated tower house in the 16th century by the Power (originally De la Poer) family. Somewhere in the 1660s it passed through inheritance to William Penn, who would become the founder of the state of Pennsylvania, USA. I don't know when and how it fell to ruin.
Between the tower and the church is a small gabled building, probably built after 1842.
The remains of this tower could have been nice had it not been incorporated in a very ugly recent building This recent building looks like it wasn't completed and is now also in ruins. Not one to visit.