Hackett Castle, County Galway
Built in the 13th, abandoned in 1705.
The ancient castle of the Kirwans lies beneath Knockma Hill, believed to be the legendary Other world seat of Finvarra, ruler of the fairies of Connaught.
The ruins of 13th century tower house stand at the foot of the famed Knockma.
It was built by the Hacketts, a Norman family who established themselves along the east side of Lough Corrib, having driven the O'Flahertys across the lake to Connemara.
The Kirwans, one of the tribes of Galway settled there in the 15th century.
