Arkin's Castle

Likely built by the O'Brien family in the 1200s, it passed through various owners in the 16th and 17th centuries, including Teige Ó Flaithbheartaigh in 1607. By the 1650s, the original structure had been demolished and a new, enlarged fort was built for Oliver Cromwell, where he stationed soldiers throughout the 1660s. Since the 1700s, it has been uninhabited. Today the ruins include part of a wall and water-gate to the north, a tower at the south-east corner, and a bartizan.^{[1][5][6][4][7]}

The castle is listed on the Record of Monuments and Places as GA119-005---- and National Monument number 43.01.^[2]